LEYBOLD COMBIVAC CM 31 - Screw Terminal Outputs for the PENNINGVAC Channel; RS 232 C Interface

The 4-way terminal strip is wired as follows (Fig. 7)
TM 1 TM 2 Signal
————————————————————————
11 111 Trigger threshold (TRG) in preparation
12 112 Trigger threshold (ground) in preparat.
31 131 Chart recorder output 0 to 10 V (REC)
32 132 Chart recorder output (ground)
The 8-way terminal strip is wired as follows (Fig.7)
TM 1 TM 2 Signal Contact symbol
————————————————————————
82 85 C Ready
83 86 n.o. (open)
41 44 n.c. (closed)
42 45 C Trigger 1
43 46 n.o. (open)
51 54 n.c. (closed)
52 55 C Trigger 2
53 56 n.o. (open)
n.c. Normally closed (resting contact)
n.o Normally open (operating contact)
C Common (Centre contact)
Note
The 8-way socket is specified for a max. permissible ope-
rating voltage of 250 V AC and 50/60 Hz with reference
to the safety ground conductor.
2.4.5 Screw terminal outputs for the PEN-
NINGVAC channel
The connections are carried via two terminal strips. One
5-way terminal strip (7/8) above, and one 8-way terminal
strip (7/11) under the gauge head connector.
The 5-way terminal strip is wired as follows (Fig. 7)
PM Signal
————————————————————————
233 + 24 approx. (R
i
= 680 Ω)
for external contact on 211
211 HV control input for PM (HV ON)
212 Ground for HV control input
231 Chart recorder output 0 to 10 V (REC)
232 Ground for chart recorder output
For the PENNINGVAC channel the wiring of the 8-way
terminal strip (7/11) is the same as for the 8-way termi-
nal strips (7/3) and (7/12) for the THERMOVAC channels
but the numbering of the pins is different!
The 8-way terminal strip is wired as follows (Fig. 7).
PM Signal Contact symbol
————————————————————————
182 C Ready
181 n.o. (open)
141 n.c. (closed)
142 C Trigger 1
143 n.o. (open)
151 n.c. (closed)
152 C Trigger 2
153 n.o. (open)
n.c. Normally closed (resting contact)
n.o. Normally open (operating contact)
C Common (Centre contact)
2.4.6 RS 232 C interface
The connections are made through a 9-way Sub-D
connector (3/2).
The interface socket on the A-series instruments is wired
as follows:
Pin No. Designation Remarks
————————————————————————
1 Not used
2 TxD Transmission data (output)
3 RxD Receive data (input)
4 Not used
5 GND Reference ground for signals
6 DTR Is pulled high (+ 8 V approx.)
when the mains voltage is
applied to the instrument.
7 Not used
8 RTS Is pulled high (+ 8 V approx.)
when the mains voltage is
applied to the instrument.
9 Shield Ground connection for cable
shield
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