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Supply unit control devices
￭
Overview of door switches and lights
This figure shows and example of the door control devices. The devices and their exact
locations varies depending on the options selected. The purpose of the devices is explained
in the following sections.
1...3
Not in use in multidrives
4
Operating switch [S21]. OFF: Opens main breaker (Q1.x), disables supply unit. ON (ENABLE/RUN):
Enables supply unit, closes main breaker (Q1.x).
5
Emergency stop reset button and indication lamp [S62] (option +G331)
6
Ground (earth) fault indicator light and reset button [S90] (option +Q954)
7
Reserved for application-engineered equipment
8
Emergency stop button [S61] (option +G331)
9
Control panel [A59] (option +J400, or +J412)
10
Auxiliary voltage supply breaker (switch fuse) [Q21]
11
Voltage meter [P5.x] (option +G334)
12
Selector switch for phase voltage meter [S5.x] (option +G334)
13
Phase current meter(s) [P2.x] (option +G335)
14
Grounding switch [Q9.x] (option +F259)
15
Main supply breaker [Q1.x] (option +F255)
￭
Main disconnecting device [Q1.x]
The supply unit is equipped with a main breaker ([Q1], option +F255) as standard. With this
device, you can isolate the main circuit of the drive from the power line. The main breaker
is withdrawable: to disconnect the drive, crank the breaker out with a separate loose handle
(included in the delivery). For the 12-pulse supply unit and power ratings higher than 3000 A
there are two main disconnecting devices ([Q1.1] and [Q1.2]).
9
1
2
3
4
5
6
7
8
Operation principle and hardware description 25
10
11
13
15
12
14
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