OSSD safety outputs

2 safety-related NO contacts

Operational voltage/current switched

60 V DC , 250 V AC, max. 6 A

• Only with extended versions

1 safety-related NC contact, 60 V DC, 250 V AC, max. 6 A, minimum switched current 20 mA

OSSD external fusing

6 A T

OSSD response time of processing unit (without light curtain)

• With light curtain, type 4, with semiconductor output

22 ms

• With light curtain, type 2

64 ms

• With safety switches

64 ms

OSSD reactivation time

100 ms

OSSD suitable spark quenching

Required

through coils of the successor relays

Safety category to EN 954-1

up to 4 (depending on the category of the upstream protective device)

Supply voltage

24 V AC/DC , ±20%

Power consumption

1.5 W (supplied via AODP)

Safety switching outputs (OSSD)

2 relay outputs (NC contact)

Signaling output

Relay output (NC contact)

Continuous current per current path, max.

3 A

Response time

10 ms

Reactivation time

20 ms

Current consumption (inputs B1 and B3)

32 mA each

Permissible input resistance

50 Ω

Permissible ambient temperature

• Operation

0 °C ... +50 °C

• Storage

-25 °C ... +70 °C

Protection class

II

Type of protection

IP20

Connection method

Screw terminals

Dimensions (W x H x D)

17.5 mm x 99 mm x 113.6 mm

Assembly

on 35 mm mounting rail

Safety category to EN 954-1

Category 4

STOP category according to EN 60204-1 (11/ 98)

STOP category 0

Supply voltage

24 V AC/DC, -15% ... +10%

Residual ripple (with DC)

2.4 V_ss

Frequency (AC)

50 ... 60 Hz

Power consumption

2.1 W (AC)/1.7 W (DC)

External fusing of supply circuit

1 A slow-action

Output contacts

2 NO,

1 NC AgSnO₂, gold-flashed

Switching capacity according to EN 60947-5-1

• AC-15, 230 V

6 A

• DC-13, 24 V (360 switching cycles/h)

6 A

• DC-13: 24 V (3600 switching cycles/h)

3 A

Max. continuous current per current path

6 A

Contact fusing per current path

6.3 A quick-action or 4 A slow-action

Max. summation current of all current paths

12 A

Mechanical service life

10 10⁶ switching cycles

Switching frequency

3600 switching cycles/h

ON delay

• Manual start

70 ms

• Automatic start

230 ms

Returning time, response time

20 ms

Minimum ON period S34, S35

80 ms

Electronic fuse protection

• Response time

2 sec

• Recovery time

2 sec

Control voltage/current at S11, S22, S31

24 V DC/20 mA

Permissible power input resistance

< 70 Ω

Emitted interference

EN 50081-1, -2

Noise immunity

EN 50082-2

Air gaps and creepage distances according to DIN VDE 0110 (04.97)

4 kV

Operating temperature

25 °C ... +55 °C

Type of protection

• Enclosure

IP40

• Terminals

IP20

Connection cross-sections

• Finely-stranded

2 x 0.14 ... 0.75 mm²

• Finely stranded with end sleeve

2 x 0.25 ... 0.5 mm²

• Finely stranded with twin end sleeve

2 x 1.5 mm²

• Solid

1 x 0.14 to 2.5 mm²

• Finely stranded with end sleeve

2 x 0.25 to 2.5 mm²

Protection according to EN, IEC 61496-1

Type 4

Safety category to EN 954-1

Category 4

STOP category according to EN 60204-1 (11/ 98)

STOP category 0

Supply voltage

24 V DC ± 20%, external power pack with safe isolation and compensation of 20 ms voltage dip is required

Current consumption

Approximately 200 mA without external load

External fusing (power supply)

2.5 A mT

Connectable safety sensors (extended versions)

1 light curtain, type 4, or up to 2 light curtains, type 2 (all according to IEC 61496)

Up to 2 light curtains, type 4, or up to 4 light curtains, type 2 (all according to IEC 61496)

Test outputs T1 and T2, test interval

200 ms

Available functions

• All versions

Startup/restart inhibit, contractor control, diagnostics

• Versions with cycle control

Protective, single-cycle and two-cycle operation

• Versions with muting function

Sequential muting, parallel muting, parallel double muting (only 3RG78 47-4.G)

Control inputs

• Contactor control (EDM)

Reset of positive-action contacts of downstream contactors

• Start/restart inhibit (reset)

Floating NO (switch or key switch)

Connection

• Non-testable muting sensors

Signal level in damped state: active high, +24 V

• Testable muting sensors

Active high, +24 V, plus test pulses T1 or T2

Outputs

• Muting displays for lamps 24 V, max. 5 W

pnp switching outputs, muting function on, active high, +24 V, max. 200 mA

• Signaling outputs (depending on version)

Light curtain free/interrupted; switching status relay/transistor output; restart inhibit locked/unlocked; muting function status; muting error; warning defective muting lamp, internal error, etc.

Operating temperature

0 ... +55 °C

Type of protection

IP20; must be built into control cabinet or housing with degree of protection of minimum IP54

Installation

Mounting on 35-mm mounting rail

Connection method

Pluggable, coded screw terminals up to 2.5 mm²