LinMot C1150-DS-XC-0S, Installation Manual

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Installation Guide C1100
NTI AG / LinMot 0185-1062-E_6V12_IG_Drives_C1100 Page 17 of 29
9
Safety Wiring
The C1100 drives with the -1S option have internal safety functions:
Two Safety relays Ksr in series, which support the supply voltage for the motor drivers. There are also two
feedback contacts for each relay.
To enable the -1S drives both relays have to be switched on.
Minimal wiring:
• Connect X33.8 and X33.4 to 24VDC (from safety)
• Connect X33.7 and X33.3 to GND (from safety)
Never connect X33.8 and X33.4 to the logic supply of X4!
Overvoltage protection must be provided externally and sized according the safety circuit of
the machine!
The drop out time of the relays is depending on the external circuitry!
Safety Relay Ksr
Nominal voltage 24 VDC
Min. pick-up voltage at 20°C ≤ 16.8V
Drop-out voltage at 20°C ≥ 2.4 V
Drop-out time (no protection circuit) Typ. 3ms
Coil resistance at 20°C 2'100 Ω ± 10%
Type EN 50205, type A
Contact lifetime > 10'000'000
Manufacturer and type Elesta relays / SIS112 24VDC
Drive Classification according EN ISO 13849-1 (safety of machinery)
Category cat = 3
Performance Level PL = d
Diagnostic Coverage DC = high (99%)
Mean Time to hazardous failure of one channel MTTF
d
= high (100 years typically, see calculation example
below)