SIMATIC - ET 200pro motor starter
7-10 GWA 4NEB 950 5661-02 DS 04
7.4 Disconnecting module 400 V (ASM-400V)
7.4.1 Features
Safety guideline
The module is to be tested on commissioning and thereafter every 12 months.
For the test, proceed as follows:
- Switch off the safety module that supplies the F0 busbar.
- Check whether the 400 V has been switched off
- Switch on the safety module that supplies the F0 busbar.
The disconnecting module 400 V is configured for the following individual func-
tions:
• Dual tripping of main current circuit supply (category 4)
• Confirmation of the module function state via bus
• Confirmation of the switch state of the contactor via bus
7.4.2 Description
The disconnecting module 400 V may only be used in conjunction with the
safety local maintenance isolating module for local safety applications. It con-
tains 2 inline contactors for fail-safe tripping of the main circuit. Operational trip-
ping of the connected consumer unit must take place by means of a down-
stream motor starter. The auxiliary current circuit supply of the device is pro-
vided via the safety busbar in the rear wall bus module.
The disconnecting module 400 V can be used in conjunction with the safety
local maintenance isolating module for safety applications up to category 4 com-
plying with EN 954-1 or SIL 3 complying with IEC 61508.
The operating mode is low-demand and high-demand
Caution
The summation current via the disconnecting module 400 V must not exceed a
maximum of 25 A.
Warning
In the event of a short circuit on the load side (circuit breaker on the F-RSM has
triggered), there is a danger that both contactors in the ASM have fused.
Following a short-circuit tripping, the functional capability of the ASM must be
checked.
When switched off, there must be no electrically conducting connection
between pins 1, 2 and 3 at connection X1 and sockets 1, 2 and 3 at connection
X2.
Fusing of the contactors in the event of a short circuit can be prevented by an
additional safeguard of the power infeed with fusible links (max. 16 A gL/gG NH
type 3NA, DIAZED type 5SB or NEOZED type 5SE).
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