Note: The safety circuit design can be different when modified according to the
customer's safety requirements. Refer to the circuit diagrams delivered with the
drive.
3. Use shielded, twisted pair cables. ABB recommends double-shielded cable and
gold-plated contacts in the emergency stop button.
4. Make sure that the sum resistance for one channel (loop resistance) is not more
than 70 ohms.
5. Obey the general control cable installation instructions given in the drive hardware
manual.
You can also install additional reset buttons and indication lamps for the emergency
stop circuit on site. ABB recommends gold-plated contacts in the reset button. Connect
the buttons to the applicable terminal block inside the drive cabinet. Refer to the
circuit diagrams delivered with the drive. Obey the rules below:
1. Sum resistance of the external reset circuit must not be more than 70 ohms.
2. Obey the general control cable installation instructions given in the drive hardware
manual.
20 Electrical installation
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