C30730 — SI Motion P2: Reference block for dynamic Safely-Limited Speed invalid

C30730 is a safety message from the Safety Integrated (SI) Motion P2 monitoring. The safety monitoring channel has identified an error: the reference block transferred via PROFIsafe is negative. Such a reference block is used to generate a referred velocity limit value based on the reference quantity “Velocity limit value SLS1” (p9331[0]). Because the transferred block is invalid, the drive is stopped as a result of the stop response configured in p9363[0]. In the manual’s abbreviations, SLS stands for Safely-Limited Speed. The S120/S150 and G130/G150 manuals describe this message with the same cause and remedy, so everything below applies to all of these converters.

• The reference block transferred via PROFIsafe is negative.
• This reference block is what generates the referred velocity limit value from the reference quantity “Velocity limit value SLS1” (p9331[0]); with an invalid block, the drive is stopped as a result of the configured stop response (p9363[0]).

1. Read the message value in r9749 and interpret it as a decimal number; it identifies the condition as “requested, invalid reference block”.
2. Correct the input data S_SLS_LIMIT_IST in the PROFIsafe telegram so that the transferred reference block is no longer negative.

• The drive stores the message value in r9749; the manual specifies that it is interpreted decimal.
• Decoding per the manual: “requested, invalid reference block”.

• p9331 — SI Motion SLS limit values (Motor Module): p9331[0] is the reference quantity “Velocity limit value SLS1” on which the reference block bases the referred velocity limit value.
• p9363 — SI Motion SLS stop response (Motor Module): the drive is stopped with the stop response configured in p9363[0] when this error is detected.
• r9749 — SI message value: holds the message value of this safety message; read it and interpret it decimal.

Correct the input data S_SLS_LIMIT_IST in the PROFIsafe telegram first, then acknowledge the message. The manual gives the acknowledgment path as follows: This message can be acknowledged without a POWER ON as follows (safe acknowledgment): - PROFIsafe. A POWER ON acknowledgment is also provided.