4
Operating instructions
Output expander module
SRB402EM
SRB402EM/CC
EN
6. Set-up and maintenance
6.1 Functional testing
The function of the output expander module must be tested. The
following conditions must be previously checked and met:
1. Correct fixing
2. Check the integrity of the cable entry and connections
3. Check the output expander module's enclosure for damage.
6.2 Maintenance
A regular visual inspection and functional test, including the following
steps, is recommended:
1. Check the correct fixing of the output expander module
2. Check the cable for damages
3. Check electrical function
The device has to be integrated into the periodic check-ups
according to the Ordinance on Industrial Safety and Health,
however at least 1 × year.
Damaged or defective components must be replaced.
7. Disassembly and disposal
7.1 Disassembly
The output expander module must be disassembled in the de-
energised condition only. Push up the bottom of the enclosure and hang
out slightly tilted forwards.
7.2 Disposal
The output expander module must be disposed of in an appropriate
manner in accordance with the national prescriptions and legislations.
8. Appendix
8.1 Wiring example
Single-channel control at terminal A1 of the SRB402EM expander
module through a safety release of the basic module (Fig. 1)
• The terminals X1 and X2 of the expander module must be connected
to the feedback circuit or the single-switch circuit of the basic module.
Safety notice:
the expander module must be wired in
accordance with the wiring example.
The safety function is
only realised in conjunction with the basic device.
24 V
0 V
SRB ...*
SRB 402EM**
24
14
23
13
A2
X1
X2
A1
X2
X1
Fig. 2 * = basic module; ** = expander module
Example! The terminal designation of the basic module can
deviate depending on the used type, please also observe the
description of the basic module!
Internal wiring diagram
23 33 43 51
A1
A2
F1
K1
K1
K2
K2
K1
K1
K2
K2
X1
X2
13
24 34 44 52
61
62
14
Fig. 3
