SMA SC 500CP-US - Manual (Page 83)

SMA America, LLC 12 Cable Connection of External Devices in the Interface Cabinet
Installation Manual SCCP-US-IA-US_en-41 83
12.10 Connecting the External Fast Stop
If an external fast stop should be activated, the external fast stop must be connected in accordance with the circuit
diagram.
Cable requirements:
☐ The cable must be shielded.
☐ Cable length with a wire size of AWG 14 (2.5 mm
2
): maximum 426 ft. (130 m)
☐ Cable length with a wire size of AWG 16 (1.5 mm
2
): maximum 262 ft. (80 m)
Requirements:
☐ Use latching switches only.
☐ The inverter must be disconnected (see Section 14 "Disconnecting the Inverter", page 86).
☐ The cable must be routed into the interface cabinet (see Section 12.4 "Inserting the Cables into the Interface
Cabinet", page 79).
Procedure:
1. Connect the cable to the plug in accordance with the circuit diagram.
2. Plug the connector into the connecting terminal plate in accordance with the circuit diagram.
3. Attach the cable to the cable support rail using a cable tie. This ensures that the cable cannot be pulled out.
12.11 External AC Power Contactor Monitoring
The AC power contactor is closed when the inverter is operating. The switching state of the AC power contactor is
signaled by a potential-free contact (NC normally closed). The signal can be used, for example, to switch on external
fans in an electrical equipment room.
Procedure:
1. Dismantle the cable and strip the insulation.
2. Connect the cable in accordance with the circuit diagram.
3. Attach the cable to the cable support rail using a cable tie. This ensures that the cable cannot be pulled out.
/05*$&
Damage to the inverter due to faulty installation of the external fast stop
• When connecting the external fast stop cabling, it is obligatory to follow the circuit diagram supplied. The
connection is made at the terminals.
Tripping the fast stop function
If the external supply voltage of the external fast stop is between 24.0 V
DC
and 30.0 V
DC
, the inverter will continue
to operate in its current operating state. If the external supply voltage at the fast stop is between 0 V
DC
and 4 V
DC
,
the inverter will change its operating state to "Stop."
The fast stop function should only be tripped in the event of immediate danger. Tripping the fast stop will not rapidly
discharge the capacitors.