Hardware Settings; Wiring - ABB ACS880-07 User Manual

Hardware settings

Appropriate hardware settings have been preset at the factory for the safety function.
The settings in the emergency stop safety relay [A61] are:
•
cross fault detection is set to value On,
•
manual reset is set to value On.
Note: If the cross fault detection is not On, it decreases the fault diagnostics of the wiring.
For more information, see the circuit diagrams delivered with the drive.

Wiring

One emergency stop button and one reset button are installed on the cabinet door and
wired to the drive at the factory. There are double contacts in the emergency stop button
and double wiring (two-channel connection) between the button and the emergency stop
safety relay [A61]. The safety relay detects cross faults and faults across one contact from
the emergency stop button. This function must be used in a redundant manner, that is, the
emergency stop button must be connected to both terminals with a separate contact.
If needed, install additional emergency stop buttons on site and wire them to the
appropriate terminal block inside the drive cabinet. See the circuit diagrams delivered with
the drive. Follow the rules below:
1. Use only double-contact buttons approved for the emergency stop circuits.
2. Connect the emergency stop buttons with two conductors (two-channel connection).
Note: Keep the channels separate. If you use only one channel, or if the first and
second channels are connected together (for example, in a chain), the cross fault
detection of the emergency stop safety relay trips and activates the emergency stop
command of the drive as it detects a redundancy fault.
3. Use a shielded, twisted pair cable. We recommend a double-shielded cable and gold-
plated contacts in the emergency stop button.
4. Ensure that the sum resistance for one channel (loop resistance) from the field to the
safety relay does not exceed 70 Ohm.
5. Follow 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. We recommend gold-plated contacts in the reset button. Wire the buttons to
the appropriate terminal block inside the drive cabinet. See the circuit diagrams delivered
with the drive. Follow the rules below:
1. Sum resistance of the external reset circuit may not exceed 70 Ohm.
2. Follow the general control cable installation instructions given in the drive hardware
manual.
Option description and instructions 17