Technical specifications
ABB Control - AC 31 Page 3-7
1SBC 260400 R1001-b 06.99
3. Central units
3.1. The front of the central unit (see Figure 3-1)
1 - Location for DIN rail
2 - Plate fixture with unit earthing
3 - Lock for DIN rail mounting
4 - Location for external dual connector
5 - Location of the cable connectors
- of the CS 31 bus (only available for the 50 series)
- of the 24 V d.c. power output for the inputs
(only available for the central units powered at 120 / 230 V a.c.)
- 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 serial port for programming or communication ASCII / MODBUS
®
- connector for the central unit power supply cabling
- connectors for the outputs cabling
9 - Location of the potentiometers and the On/Off switch (see enlargement).
10 - Location of the connector for connection to a coupler.
11 - PLC status visualization area:
- POWER: power on
- RUN: program running
- ERR: error(s) present
Enlargement of item 9 (see Figure 3-2)
1 - Potentiometer whose value is read into the IW62.01 variable by the program
(value of 0 to 150 in the program)
2 - Screwdriver for potentiometer adjustment
3 - Potentiometer whose value is read into the IW62.00 variable by the program
(value of 0 to 150 in the program)
4 - Central unit program ON/OFF switch
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