SD34002g_e.doc / Sep-13
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8. Appendix for models SD/SA/SR 6xx
8.1. Relay Outputs
All available models are shown in section 1. While models SD 3xx provide high-speed
transistor outputs only, all models SD 6xx provide four additional relay outputs, operating in
parallel to the high-speed transistor outputs K1 – K4.
All electrical connections of 6xx models are fully similar to the 3xx models, except that with 6xx
models the back plane is equipped with an additional 12-position terminal strip.
2 3
1
5 6
4
8 9
7
11 12
10
X3
K
4
-C
K
4
-N
O
K
4
-N
C
K
3
-C
K
3
-N
O
K
3
-N
C
K
2
-C
K
2
-N
O
K
2
-N
C
K
1
-C
K
1
-N
O
K
1
-N
C
REL.4
REL.3
REL.2
REL. 1
C
=
NO =
Common contact
NC =
Normally open
Normally closed
8.2. Front Thumbwheel Switches
Moreover, the models shown below provide thumbwheel switches on the front panel, for
simple and easy setting of preselection levels. Every row allows in maximum 9 decades and
one blank field for separation. The customer is free to specify any desired combination and
number of decades individually, which is not wider than totally 10 spaces.
As an example, with model 642 it is possible to specify
“Set1 = 3 decades, Set2 = 6 decades”, or e.g. “Set1 = 8 decades” etc.
Where your order does not clearly state a different array of the thumbwheels, the
units will be supplied with 2 x 4 decades respectively 4 x 4 decades
Models 642 can have
Models 644 can have
max. 2 switch sets on front
max. 4 switch sets on front
Thumbwheel set 1
Thumbwheel set 2
Thumbwheel set 1
Thumbwheel set 2
Thumbwheel set 3
Thumbwheel set 4
