E1400 V1 Rev. E Installation Guide
8 Safety Wiring
The E1400 Drive with the -1S option has 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)
Attention: Never connect X33.8 and X33.4 to the logic supply of X4!
If an overvoltage protection is needed, it must be provided externally and
sized according the safety circuit of the machine!
Attention: 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
Mean Time to hazardous failure of one channel
MTTFd = high
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