ABB 07AC91, Руководство по эксплуатации, Страница: 22 / 124

Technical specifications 3 – 4
Advant Controller AC 31 / Issued: 01.99
3
3.3 Basic units
3.3.1 View of a basic unit (see Figure 1 on the next page)
1 – Location for DIN rail
2 – Plate fixture with unit earthing, alternative to 1
3 – Release lever for DIN rail mounting
4 – Location for external dual connector
5 – Cable connectors (plug-in), under cover flap
- for CS31 system bus (only available for the 50 series)
- 24 V d.c. power output to supply inputs
(only available for the basic units powered at 120/230 V a.c.)
- inputs
6 – Status LEDs for 8 inputs/6 outputs of the basic unit
7 – Connector for central input/output extensions, under cover flap
8 – Cable connectors, under cover flap, for:
- serial port for programming or communication ASCII/Modbus
®
- basic unit power supply cabling
- outputs cabling
9 – Potentiometers and RUN/STOP switch (see magnification), under cover flap
10 – Connector for a coupler, under cover flap
11 – Status displays:
- POWER: power on
- RUN: program running
- ERR: error(s) present
Magnification of item 9 (see Figure 2 on the next page)
1 – Potentiometer whose value is read into the EW62.00 variable by the program (value
range in the program 0 to 150)
2 – Screwdriver to adjust potentiometers
3 – Potentiometer whose value is read into the EW62.01 variable by the (value of
range in the program 0 to 150)
4 – Basic unit program ON/OFF switch