ZD340_07d_e.doc / Apr-17
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7. Appendix for models ZD/ ZA/ ZR 6xx
7.1. Relay Outputs
All available models are shown in section 1. While models ZD 3xx, ZA 3xx and ZR 3xx provide
high-speed transistor outputs only, all models ZD 6xx, ZA 6xx and ZR 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 four additional terminal strips (3-positions each).
Terminal X3 represents output K1 to output K4.
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
Relay connector with units after Jan, 2009
2
3
1
2 3
1
2
3
1
2 3
1
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
X6
X5
X4
X3
Relay connector with units before Jan, 2009
(replaced because of mistakable screw terminals)
7.2. 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 632 and 642 can have
Models 634 and 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
