Invertek Drives Eco Optidrive ODV-3-220043-1F12-SN User Manual page 29

4.11.7. Recommended "STO" Wiring
Using an External 24Vdc Power Supply
Protective Capped Trunking
or equivalent to prevent
STO Cable short circuit to an
external Voltage source .
Safety relay
Safety relay
External
+24Vdc
Power
Supply 0V
- Twisted-Pair
- Shielded cables
NOTE The Maximum cable length from Voltage source to the drive terminals should not exceed 25 metres.
4.11.8. External Power Supply Specification
Voltage Rating (Nominal)
STO Logic High
Current Consumption (Maximum)
4.11.9. External Power Supply Specification
The safety relay should be chosen so that at minimum it meets the safety standards in which the drive meets.
Standard Requirements
Number of Output Contacts
Switching Voltage Rating
Switching Current
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Protective Capped Trunking
or equivalent to prevent
STO Cable short circuit to an
external Voltage source .
1213
- Twisted-Pair
- Shielded cables
Wires should be
protected against
short circuits as shown
24Vdc
18-30Vdc (Safe torque off in standby)
100mA
SIL2 or PLd SC3 or better (With Forcibly guided Contacts)
2 independent
30Vdc
100mA
Using the drives on-board 24Vdc supply
Protective Capped Trunking
or equivalent to prevent
STO Cable short circuit to an
external Voltage source.
Safety
relay
1213
above
Version 3.05 | Optidrive Eco User Guide | 29
Protective Capped Trunking
or equivalent to prevent
STO Cable short circuit to an
external Voltage source.
Safety
relay
1 7 1213
Protected
shielded cables
Protected
shielded cables
1 7
4