Технічний документ JCI — CLK350-2 Low Voltage, 7-Day Programmable

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FANs 791, 930
Product/Technical Bulletin CLK350-2
Issue Date 0300

CLK350-2 Low Voltage, 7-Day Programmable,
Single-Circuit Control Clock

The CLK350-2 single-circuit control clock is designed
to provide 7-day, programmable, ON/OFF control for
low-voltage DC and low-current (40VDC, 25mA
maximum) field devices.
The CLK350-2 clock is typically used to schedule the
temperature reset function on the A350R Electronic
Temperature Reset Control or offset temperature
function on the A419 Electronic Temperature Control
with Display.
ON and OFF events can be programmed to occur on a
single day of the week, multiple days of the week, or a
combination of both.

Figure 1: CLK350-2 Low Voltage, 7-Day
Programmable, Single-Circuit Control Clock

Features and Benefits
Single-day or Block Permits versatility in programming; adapts to
Programming a wide range of scheduling needs

Daylight Saving Time Provides either automatic Daylight Saving
Changeover Options time changeover every year, or one button
manual Daylight Saving time changeover

Holiday Programming Allows for a special holiday or vacation
program for one or multiple days

Liquid Crystal Display Clearly displays the time of day, day of week,
and program ON/OFF status

Manual Override Overrides the programmed event control and
maintains the controlled device On or Off,
either temporarily or continuously

Internal Battery Backup Retains time/date settings and event
programs upon loss of power for up to
two weeks

Minute-to-minute Allows load switching in precise time
Programming increments

© 2000 Johnson Controls, Inc. 1
Part No. 24-7664-141, Rev. B www.johnsoncontrols.com
Code No. LIT-930100
A pplication O peration
The CLK350-2 Low Voltage, 7-Day Programmable, The CLK350-2 control clock employs a
Single-Circuit Control Clock is designed to provide polarity-sensitive, open-collector transistor output that
user-defined, time-of-day and day-of-week, ON/OFF energizes during programmed ON times and
scheduling for a variety of field devices that have a low de-energizes during OFF times. During a programmed
DC voltage, and low current control circuit. (Maximum ON time, the transistor between the output terminals is
output load circuit rating is 40VDC, 25mA.) on and the LCD displays the ON symbol ( ).
The CLK350-2 control clock is typically used to provide During a programmed OFF time, the transistor
ON/OFF scheduling of the temperature reset function between the output terminals is off and the LCD
on the A350R Electronic Temperature Reset Control displays the OFF symbol ( ).
or the temperature offset function on the
A419 Electronic Temperature Control with Display. Manual override allows the user to turn the electronic
output ON or OFF (temporarily or continuously)
IMPORTANT: The CLK350-2 control clock is without changing the stored programs.
intended to control equipment In the event of a power loss, a built-in, lithium battery
under normal operating maintains the time of day, day of week and
conditions. Where failure or programmed event times for up to two weeks. During a
malfunction of the power outage, the clock’s output is OFF.
CLK350-2 control clock could
lead to an abnormal operating The CLK350-2 clock turns a field device ON and OFF
condition that could cause according to a user-defined, time-of-day schedule.
personal injury or damage to the Two schedule types are available when programming:
equipment or other property,
other devices (limit or safety • block programming, which allows a block of
controls) or systems (alarm or multiple days (up to seven) to be programmed with
supervisory systems) intended to the same ON and OFF times
warn of, or protect against, failure • day-to-day programming, which allows each day
or malfunction of the to be programmed independently.
CLK350-2 control clock must be
incorporated into and maintained The user can choose block programming, day-to-day
as part of the control system. programming, or a combination of both as long as the
ON and OFF times do not overlap.

Terminal Guide
Base Pins
Clock
Module
Mounting Holes
(Lower-right hole not
Housing
visible in this view.)

Captive
Screw
Terminal
Cover
Clear
Cover
Break-away Tabs
for DIN Rail Mounting
(One on each side.) Captive
Screw

Figure 2: CLK350-2 Low Voltage, 7-Day Programmable, Single-Circuit Control Clock: Exploded View

2 CLK350-2 Low Voltage, 7-Day Programmable, Single-Circuit Control Clock Product/Technical Bulletin
D imensions
2-1/16
2-13/16
(52)
(71)

4-1/4
CH1
(105)

Figure 3: CLK350-2 Dimensions, Front View and Side View, in. (mm)

I nstallation
IMPORTANT: In areas where high electrical
DIN Rail Mounting noise is present, locate the clock
Refer to Figure 2 and follow the instructions below to at least five feet away from the
mount the clock on a standard 35 mm DIN rail. noise source to avoid possible
electrical interference.
IMPORTANT: Do not DIN Rail mount the clock
in locations where excessive
vibrations are present.

1. Remove the clear cover from the front of the unit.
2. Using a 1/8 in. flat-blade screwdriver, loosen the
two captive screws located in the upper right and
lower left corners of the housing.
3. Remove the housing by pulling forward.
4. Using blunt-nosed pliers, remove the break-away
tabs from the housing. (See Figure 4.)
5. Remove the terminal cover by pulling forward.
1. Snap the CLK350-2 clock onto the DIN rail.
Figure 4: Removing the DIN Rail
2. Make wiring connections (See Wiring section). Break-away Tabs
Remove the appropriate knockouts on the terminal
cover for either conduit or wire entry. (See
Figure 5.)
3. Replace the terminal cover and housing, tighten
the captive screws, and replace the clear cover.

CLK350-2 Low Voltage, 7-Day Programmable, Single-Circuit Control Clock Product/Technical Bulletin 3
Surface Mounting Wiring
The CLK350-2 clock is not position sensitive and may
be mounted in any orientation. However, vertical ! WARNING: Risk of Electrical Shock.
mounting is recommended to facilitate programming
Disconnect power supply before
the clock. Refer to Figure 2 and follow the instructions
making wire connections to avoid
below to surface mount the clock.
possible electrical shock or
1. Remove the clear cover from the housing. damage to equipment.
2. Using a small flat-blade screwdriver, loosen the Select a power source: either the Y350R power
two captive screws located in the upper right and module (only with the A350R control) or a separate
lower left corners of the housing. 24 VAC transformer.
3. Remove the housing by pulling forward.
IMPORTANT: The CLK350-2 clock can be
4. Remove the terminal cover by pulling forward. affected by electrical spikes and
other line noise. It is
5. Remove clock module from the terminal base by
recommended that the clock be
firmly grasping it on both sides and pulling the
powered from a voltage source
module forward (without twisting it).
that has no switching devices or
6. Place the terminal base against the desired inductive loads connected.
mounting surface, and, using the base as a
template, mark the three mounting holes. Drill Wire the clock using 16 to 24 AWG wire. Refer to
three 1/16 in. holes for No.6 screws. Table 1 and the appropriate wiring diagram in the
figures below. All wiring should conform to the National
7. Center the terminal base to the mounting surface Electrical Code and local regulations.
using the three holes and fasten the unit securely
with the No.6 screws (provided). If necessary, use Before applying power, make sure installation and wire
the drywall anchors provided. connections are according to job specifications. Then
power up the clock and proceed to the Setting the
8. Make wiring connections. (See Wiring section.) Time, Day, and Daylight Saving Time section.
Remove the appropriate knockouts on the terminal
cover for conduit entry. (See Figure 5.)
4. Replace the clock module, terminal cover, and ! CAUTION: Equipment Damage Hazard.
housing. Tighten the captive screws, and replace The switching output on the
the clear cover. CLK350 is rated for 1 to 25 mA
at 1.5 to 40 VDC. Proper
polarity through the output
switch must be maintained.
(See Table 1.)
Exceeding the clock or control
input or output voltage or output
current ratings voids the
warranty.

Note: When first applying power, it takes several
Figure 5: Removing the Knockouts for Conduit or minutes for the battery to charge. If the LCD
Wire Entry does not come on after a few minutes, press
the Res. key (with a pen point).

Table 1: Terminal Designations for Wiring the CLK350-2 with the A350R and the A419
CLK350-2 CLK350-2 Terminal Corresponding Corresponding
Terminal Number Description A350R Terminal A419 Terminal/Connection
1 + Supply Power Input 24 VAC Separate 24VAC Supply Transformer
2 – Supply Power Common COM Separate 24VAC Supply Transformer
3 (+) Switched Output CLK IN BIN (+)
4 (-) Output Common COM COM (-)

4 CLK350-2 Low Voltage, 7-Day Programmable, Single-Circuit Control Clock Product/Technical Bulletin
Cable Shield A419ABC-1
A350R
A350R (+) BIN
Wire
Terminal CLK350-2 (–) COM

CLK COM
Block (+) SEN

1 2 3 4 5 NC NO
240
24 CLK350-2 AC 120
NO C IN COM COM 24 C

CLK IN
VAC
VAC COM
COM
1 2 3 4 5
CLK IN

To Sensor
Controlled CLK COM
Load 24
VAC 24
< 30 VAC
VAC
< 100 VA COM Controlled
120/240 VAC COM
Load
24 VAC
Transformer

Figure 6: A350R Temperature Control (with a 24 VAC
Transformer 120 VAC
24 VAC Transformer Power Supply) Using a (Use 240 and AC COM
120/240
CLK350-2 Clock to Schedule the Reset Function VAC
terminals for 240 VAC)

Figure 8: A419ABC-1 (120/240 VAC Model)
A350R Y350R
A350R Wire Temperature Control Using a CLK350-2 Clock to
Terminal Power Schedule the Offset Temperature Function
Block Module CLK350-2

240 120
VAC VAC 1 2 3 4 5
24 Cable Shield A419GBF-1
NO C IN COM COM
VAC
(+) BIN
24 VAC (–) COM
24 VAC COM (+) SEN

CLK COM
CLK IN
Controlled CLK COM C NO
Load 120 VAC CLK350-2
T1 NC
< 30 VAC Supply T2

CLK IN
< 100 VA
1 2 3 4 5

To Sensor
Figure 7: A350R Temperature Reset Control (with a
Y350R Power Module) Using a CLK350-2 Clock to
24
Schedule the Reset Function VAC
Controlled
Notes: Power from the Y350R power module is COM
Load
24
supplied to the A350R control through a 5-pin VAC
< 30 VAC
connector. Use the 24 VAC and COM < 100 VA
COM
terminals on the A350R control to power the 24 VAC
CLK350-2 clock. (See Figure 7.) Transformers

When used with the A419GBF-1 control 120/240
(24 VAC model), the CLK350-2 clock must be VAC
powered by a 24 VAC power supply
transformer that is separate from the
A419GBF-1 control power supply. Figure 9: A419GBF-1 (24 VAC Model) Temperature
Control Using a CLK350-2 Clock (with a Separate
Refer to A350R Electronic Temperature Reset
24 VAC Power Supply) to Schedule the Offset
Control (with Relay) Product/Technical Bulletin
Temperature Function
LIT-930033 and A419 Electronic Temperature
Control with Display Product/Technical Bulletin
LIT-125188 for additional information on
installing, wiring, setting up, and operating
these temperature controls.

CLK350-2 Low Voltage, 7-Day Programmable, Single-Circuit Control Clock Product/Technical Bulletin 5
D isplay Elements and Programming
Key Functions
Day Field displays numbers that represent the days of the week. (1 is Monday, 2 is Tuesday, 3 is Wednesday, etc.)
In the Run mode, the current day of the week is displayed in the Day field.
In the Programming mode all days of the week are displayed and you omit days that you do not want a scheduled event to occur.
The Day field is also used to guide you through setting Automatic Daylight-Saving Time changeover.

Daylight-Saving Time Symbol indicates when Holiday Symbol indicates when the clock is
the clock is operating in Daylight-Saving time running the Holiday program.

AM/PM Symbol indicates whether time in
Time field is am or pm. The AM/PM Time Field: In the Run mode the Time field
symbol field is blank when the clock is displays the current time of day in either
set to military time. AM/PM or military time.
In the Programming mode, the Time field is
used to set the time of day when an event is
Channel Indicator: The CLK350 Time Clock scheduled to occur.
has only one channel indicated by CH1. CH1 The Time field is also used to establish days,
months, and years when setting Automatic
Daylight-Saving Time changeover.
Run Mode Symbol indicates when the
clock is in normal run operation.

ON/OFF Symbol indicates if the clock’s switch is closed (ON = ) or Temporary Manual Override ON Symbol indicates if the temporary
open (OFF = ). The square brackets indicate that the automatic manual override function is on and automatic control is overridden
event schedule is overridden and the switch is set to be continuously until the next scheduled event is initiated. If the symbol is absent,
ON ( [ ] ) or OFF ( [ ] ). the temporary manual override function is off.

Figure 10: Display Elements and What They Indicate

ON/OFF Selection Key: In the Programming mode, press to
select an ON or OFF event. In the Run mode, press to select
temporary or continuous (Fixed) ON or OFF manual override.

Reset Key: Press Res. to completely
clear the clock memory of all programs, Daylight-Saving Change Key: Press +1h to
time of day and date, and reset the add or subtract one hour from the displayed
clock for reprogramming. (This is a time to adjust for daylight-saving time changes.
recessed key, press with a pen point.) (This is a recessed key, press with a pen point.)
Mo Tu We Th Fr Sa Su

Hours Key: Press h to set the hour
of the day in AM/PM or military
Program Mode Key: Press Prog. time. This key is also used in other
to go to Programming mode. programming procedures. (See
Programming the CLK350-2 Clock.)

CH1 Minutes Key: Press m to set the
- Set Time/Auto Run Mode Key: Press minutes of the hour in AM/PM or military
and hold to set the day of the week, and time. This key is also used in other
time of day. Also press this key to return programming procedures. (See
the clock to Automatic Run mode. Programming the CLK350-2 Clock.)

Day of the Week Key: Press Day to set current
day when setting up clock, or to select days of
Holiday Program Key: Press to save a the week to be omitted from programmed events
Holiday program or to establish a day of the in Programming mode. (See Programming the
week as a holiday. CLK350-2 Clock.)
Select Key: Press Sel. to omit the day(s) of the week
that were selected with the Day of the Week key.

Figure 11: Programming Keys and Their Functions

6 CLK350-2 Low Voltage, 7-Day Programmable, Single-Circuit Control Clock Product/Technical Bulletin
S etting the Time, Day, and Daylight
Saving Time
IMPORTANT: Before setting the time and day, Changing Daylight Saving Time Manually
and programming the clock for In the Spring when Daylight Savings time is scheduled
the first time (or when re-setting to changeover, press the +1h key once to advance the
up the clock for a new clock display one hour. The +1h symbol appears to
application), press the Reset key the left of the Time field. (See Figure 10.) Press the
(Res.) to clear all data from the +1h key once again in the Fall to set the clock to
clock memory. standard time. (The +1h symbol disappears.)

Setting the Time of Day and Day Setting Automatic Daylight Savings Time
After resetting the CLK350-2 clock, set the clock for Changeover
the current time-of-day and day by first setting the
display for AM/PM or military time. Setting the Daylight Saving time to changeover
automatically is optional, but you only need to set this
To set the digital clock for AM/PM or military time function once and the clock will automatically
display: changeover on the first Sunday in April and the last
1. Press and hold the h key, then press the +1h key. Sunday in October every year until the year 2079.
AM/PM time is selected when AM and 12:00 To set automatic Daylight Saving time changeover:
appears on the display in the Time field.
1. Press and hold the +1h key and press the Day key
2. Press the +1h key again to select military time. once. A 1 appears in the Day field at the top of the
(00:00 appears on the display, and AM/PM is not LCD, and a flashing 12:31 (December 31st)
displayed when military time is selected.) appears in the Time field AM/PM mode. In Military
To set current time of day and day: Time mode 31:12 appears flashing. Release the
+1h key.
1. Press and hold the key then,
2. Enter the current date (in the AM/PM mode) by
2. If Daylight Saving time is in effect, press the +1h pressing the m key to advance to the current day
key once. The +1h symbol appears on the display of the month, then press the h key to advance to
to the left of the Time field. (See Figure 10.) the number for the current month. (In the Military
Time mode use the h key to advance the days and
3. While holding down the key, press the h key to the m key to advance the months.)
advance to the current hour. (Holding the h key for
longer than 2 seconds advances the hours 3. When the current date is entered, press the +1h
rapidly.) key once. A 2 appears in the Day field at the top of
the display, and 1995 appears in the Time field.
4. While holding down the key, press the m key
to advance to the current minute. (Holding the m 4. Press the m key repeatedly to enter the current
key for longer than 2 seconds advances the year. (If you overshoot the current year, press and
minutes rapidly.) hold the m key down to scroll to 2079 and back to
1995.)
5. While holding down the key, press the day key
repeatedly to advance to the number in the Day 5. When the current year is entered, press the +1h
field for the current day of the week. (1 is Monday, key once, a 3 appears in the Day field, and AU
2 is Tuesday, etc.) appears in the Time field. (AU sets the European
daylight saving dates.)
Note: If the day numbers are flashing, the day of
week was not set. The time clock cannot be 6. Press the m key once, cHA appears in the Time
programmed unless the day of week is set. field. (If the m key is inadvertently pressed twice
and HA appears, press the m key two more times
until cHA appears.)

CLK350-2 Low Voltage, 7-Day Programmable, Single-Circuit Control Clock Product/Technical Bulletin 7
7. When cHA is entered, press the +1h key once, a IMPORTANT: If the Day field is flashing, the
4 appears in the Day field, and 03:30 appears in time-of-day and/or day-of-week
the Time field in the AM/PM mode, which indicates have not been set and saved
March 30. 30:03 appears in Military Time mode. properly.
(Other dates in late March may appear, instead of The current time-of-day and
March 30.) day-of-week must be set before
8. Enter the date for the spring time change (in the entering programs into the time
AM/PM mode) for the current year by pressing the clock. See Setting the Time, Day,
h key once to advance to month 04 (April). Then and Daylight Saving Time.
press the m to advance to the date of the first
Sunday in April of the current year. (In the Military
Programming Event ON/OFF
Time mode, use the h key to advance the days
and the m key to advance the months.) Refer to To create a program, first select the programmed
Daylight Saving Time Changeover Dates listed event to be ON or OFF. To select ON or OFF events:
below.
1. Press the Prog. key (only) once, and the Start
9. When the date for the current year’s spring time Programming display appears. (See Figure 12.)
change is entered, press the +1h key once, a
5 appears in the Day field and the month and day
for the fall time change (for the current year) 1234567
appears in the Time field.
10. Press the to save the previous settings and - -:- -
enter the Run mode.

Daylight Saving Time Changeover Dates Figure 12: Start Programming Display
2000 April 2 – October 29 2004 April 4 – October 31
2001 April 1 – October 28 2005 April 3 – October 30 2. Press the key once to create an ON event,
and the ON symbol appears.
2002 April 7 – October 27 2006 April 2 – October 29
2003 April 6 – October 26 3. Or press the key twice to create an OFF
event, and the OFF symbol appears.

P rogramming the CLK350-2 Clock Programming Event Time of Day
All programs established on the CLK350-2 clock After setting an ON or OFF event, set the time of day
consist of: (hours and minutes) that the event occurs.
• An ON or OFF command To set hours and minutes (and AM or PM in AM/PM
• A time of day (hour and minute) mode):

• A single day selection or a block selection of 1. Press the h key to scroll to the desired event hour
multiple days of the week time. (Make sure to scroll to the desired AM or PM
hours in AM/PM mode.)
A discrete program is required for each ON event and
for each OFF event, except for events that are 2. Press the m key to scroll to the desired minutes.
programmed to occur on multiple days at the same
time of day.
Up to 42 programs may be set on the CLK350-2 clock.
It is helpful to write out the program schedules before
entering the program into the time clock. Use the
schedule form provided to plan and write out the
desired program schedule. See Table 2.

8 CLK350-2 Low Voltage, 7-Day Programmable, Single-Circuit Control Clock Product/Technical Bulletin
Programming the Days of the Week IMPORTANT: If the ON/OFF symbol is flashing
After setting the time of day at which the event occurs, and the program cannot be
select the day or days of the week on which you want saved, ON or OFF was not
the event to occur. selected and entered as part of
the program. ON or OFF must be
The Day and Sel. keys are used to omit days of the selected. (See Programming
week that an event is not to occur on. If the event is to Event ON/OFF.)
occur every day of the week, ignore the Day and Sel.
keys.
To select and display the day or days of the week on Changing A Program
which the event is to occur: Select and display the program you want to change by
1. Press the Day key to move the flashing line under pressing the Prog. key repeatedly. When the desired
the first number of the day of the week you want to program is displayed, use the Sel. and Day keys to
omit from the program. (1 is Monday, 2 is omit days or to add days that were previously omitted.
Tuesday, 3 is Wednesday, etc.) Use the h and m keys to change the program’s time
(hours and minutes).
2. Press the Sel. key to omit the day.The line and
the selected number start flashing. Press the Prog. to save the changed program and go
to a new Start Programming display or press the
3. Press the Day key and the previously selected day key to save the changed program and return to Run
number disappears and the flashing line moves to mode.
the next day number position.
4. Repeat steps 1 and 2 to omit additional days of
the week. (See Figure 13 for examples of Deleting Programs
programmed-event screens.) To delete a single program:
5. When the (remaining) selected day or days of the 1. Press the Prog. key (repeatedly) until the desired
week are displayed, press the Prog. key once to program is displayed.
save the Program (Event Schedule) and return to
the Start Programming display. 2. Press the m key to :59 and press once more to
blank out the minutes positions in the Time field.
6. Press the key to return to the Run mode. (Or
3. Press the h key to 11PM (or 23: in military time
wait 1 minute for the clock to automatically revert
mode) and press once to blank out the hours
to the Run mode.)
position in the Time field.
A B
1 3 5 67 4. Press the key and the display flashes for
several seconds and then returns to the Run
AM
06:30 22:15 mode.
5. Repeat Steps 1 through 4 for each program you
want to delete.
The A clock display is in The B clock display is in To delete all programs:
AM/PM mode and is Military Time mode and is
scheduled for an On event scheduled for an Off event Press the Res. key (with a pen) to delete all the clock
at 6:30 am on Monday, at 10:15 pm on Saturday
Wednesday and Friday. and Sunday. data, including all programs, the time of day, and
daylight saving information.
Figure 13: Examples of Programmed Events

IMPORTANT: If an ON event time is
programmed and is scheduled to
occur earlier than the current
time, press the key to turn
the output switch ON. The clock
does not “look back” to determine
if the output should be ON or
OFF.

CLK350-2 Low Voltage, 7-Day Programmable, Single-Circuit Control Clock Product/Technical Bulletin 9
Holiday Program On the day the Holiday program is selected to begin
the program is implemented, and the symbol is
A Holiday program schedule may be created to use on displayed, as well as the number of days remaining in
holidays or vacation periods where the regular the holiday period. To cancel the Holiday program, and
scheduled programs are not needed. More than return to the regular programmed schedule, press the
one ON or OFF time may be scheduled for the Holiday key once.
program.
1. Press the Prog. key (repeatedly) to go to a blank Reviewing Programs
Start Programming display. (See Figure 12.) To review all of the programs:
2. Entered the first desired program for the holiday 1. Press the Prog. key repeatedly and the programs
according to the instructions in Programming the appear in the order they were entered. After all the
CLK350-2 Clock. (Start at Step 2 of Programming existing programs have been reviewed, the blank
Event ON/OFF. Do not press Prog. key again as Start Programming display appears (see
stated in step 1. Also, days are not programmed in Figure 12) allowing you to enter additional
Holiday program.) programs.
3. Press the key once. 2. Press the Prog. key again to display the number
4. Enter any additional programs as above. of free event programs available (such as Fr 38 if
four programs have been entered).
5. Press the key to save programs and enter the
3. Press the key to return to the Run mode.
Run Mode.

Implementing the Holiday Program Overriding the Programmed Schedule
You may select which day of the week the holiday is to The clock’s current event status (ON or OFF) may be
begin on, up to six days before the holiday. The overridden, either temporarily or continuously.
holiday may be programmed to continue
1 to 99 (consecutive) days. The regular scheduled Temporary Override
events are inactive during the Holiday program. To While in the Run mode, press the key once to
implement the Holiday program:
reverse the event output (ON to OFF or OFF to
1. Press the key once. Ho appears in the Minutes ON).The symbol appears on the display to the
field. right of the ON/OFF symbol and the symbol
2. Press the Day key to advance to the desired day disappears. At the next scheduled event, the clock
of the week (for the holiday to start). reverts to automatic operation.

3. Press the Sel. key once to select one day. Press Fixed Override
the Sel. repeatedly to maintain the holiday
program for multiple days. d appears in the Hour While in the Run mode, press the key twice to
field and the number of days the Holiday program turn the output ON continuously. The [ ] (Fixed ON)
will run appears in the Minutes field. symbol appears, or press the key three times to
Note: If the Sel. key is held down, the days will scroll turn the output OFF continuously, the [ ] (Fixed OFF)
rapidly to 99 and then back to 1. symbol appears.
4. Press the key to save the settings and enter To terminate a fixed override, press the key
the Run mode. The symbol is displayed above repeatedly until the symbol appears in the lower
the time field until the Holiday program is left corner of the display.
completed.
To review the Holiday program, press the key once. Battery Reserve
The holiday start day and number of days the Holiday
In the event of a power failure, a built-in, lithium battery
program is active are displayed. Press the key to
maintains the time of day, day of week, daylight
return to Run mode.
settings, and event programs for up to two weeks.
To delete implementing the Holiday program before When the clock is using battery power, the output is
the program starts, press the key twice, and the OFF. The non-replaceable battery is charged while the
symbol disappears from the display. clock is powered.

10 CLK350-2 Low Voltage, 7-Day Programmable, Single-Circuit Control Clock Product/Technical Bulletin
O rdering Information R epairs and Replacement
The CLK350-2 is not field repairable. To order a Do not attempt to make field repairs on the CLK350-2
replacement control clock contact the nearest clock. If the control is not functioning properly, contact
Johnson Controls branch office or authorized your local Johnson Controls/PENN representive for a
distributor and request Product Code No. CLK350-2C. replacement.

Table 2: Clock Event Schedule Form
Program Hour Minutes Holiday Program
ON/OFF Days of Week
Number (h) (m)

*1 ON 6 AM 30 Monday, Wednesday, Friday No

* This program is shown on Display A in Figure 13.

CLK350-2 Low Voltage, 7-Day Programmable, Single-Circuit Control Clock Product/Technical Bulletin 11
S pecifications
Product CLK350-2 Low Voltage, 7-Day Programmable, Single-Circuit Control Clock
Supply Power Rating 20 to 30 VAC/DC; 2 VA@ 24 VAC, 1W @ 24VDC, Class 2
Output Type Open Collector Transistor
Output Load Rating 1-25 mA @ 1.5 to 40 VDC
Clock Accuracy ± 4 minutes per year (5 seconds per week) @ 68.0°F (20°C)
Battery Backup Lithium Battery saves clock settings for up to two weeks
Programs 42 unique programmed events (ON and/or OFF) may be entered into the clock memory. If
each event is scheduled to occur 7 days per week, 294 switch events occur.
Wire Gauge 16 to 24 AWG (22 recommended)
Mounting Surface or DIN Rail
Ambient Operating 0 to 140°F (-18 to 60°C)
Conditions
Maximum RH Conditions 85% RH @ 85°F (Non-condensing)
Agency Listing UL and Canadian UL Recognized: (as Grasslin Model No. FM/1 digi 42) File E83486
FCC Compliance Part 15, Class A
Dimensions (H x W x D) 4-1/4 x 2-13/16 x 2-1/16 in. (105 x 70 x 52 mm)
Shipping Weight 7.3 oz (206 g)

The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these
specifications, consult the local Johnson Controls/PENN Application Engineering at (414) 274-5535. Johnson Controls, Inc. shall not be liable
for damages resulting from misapplication or misuse of its products.

Controls Group
507 E. Michigan Street
P.O. Box 423 Printed in U.S.A.
Milwaukee, WI 53201 www.johnsoncontrols.com

12 CLK350-2 Low Voltage, 7-Day Programmable, Single-Circuit Control Clock Product/Technical Bulletin

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