ABB AC 31 - 4. Extensible remote units; 4.1. The front (see Figure 3-3)

Technical specifications
ABB Control - AC 31 Page 3-13
1SBC 260400 R1001-b 06.99
4. Extensible remote units
4.1. The front (see Figure 3-3)
1 - Location for the DIN rail
2 - Plate fixture with unit earthing
3 - Lock for DIN rail mounting
4 - Location for external dual connector
5 - Location for the cabling connectors:
- of 24 V d.c. output power for the inputs
(available only for the remote units with 120 / 230 V a.c. power)
- of the inputs
6 - Visualization set for the status of the 8 inputs / 6 outputs
7 - Location of the connector for the connection of input/output extensions
8 - Location of the cabling connectors:
- for the central unit mains supply
- for the outputs
9 - Location of the addressing rotate selectors (see enlargement)
10 - Unit status visualization area:
- POWER: power on
- RUN: always on
- ERR: error(s) present
Enlargement of item 9 without cover (see Figure 3-4)
1 - Rotate switch for addressing, reserved for decade selection
2 - Screwdriver for settings adjustments
3 - Rotate switch, reserved for unit selection