Dräger REGARD 39 0 Series Instructions For Use Manual page 61

When installing control modules, observe the following:
– Use the short foot screws for the lower level, the long foot screws for the middle
level and the long foot screws and plastic spacers for the upper level. (All screws
have a M3 thread.)
– Do not connect any control modules outside the operating console of the control
unit of the REGARD
– See also the separate assembly instructions supplied for installing the control
modules for a REGARD
5.6.1 Combining the control modules
Combining the control modules must meet the following requirements:
– Max. 6 control modules (input, relay and output modules together)
– Max. 4 input modules
– Max. 2 relay modules
– Max. 4 input modules and relay modules together
– Max. 4 output modules
The table below shows the combinations. For example, if you use the highlighted
table row, the control unit could include the following modules: 3 input modules (up
to 12 input channels), 1 relay module (up to 8 relays), two, one or no output
modules (16, 8 or 0 output channels).
REGARD
®
3900 and 3920 series.
®
3910 control unit.
Input module
4
3
3
2
2
2
1
1
1
®
3900
Installation & commissioning
Relay module Max. number of output
0
1
0
2
1
0
2
1
0
modules
2
2
3
2
3
4
3
4
4