Siemens SIREC DS 7ND4120 Series, User Manual

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20 43-TV-25-20 GLO Issue 4 01/02 UK
A5E00117351-04
The pin-outs for the relay alarm card are numbered from the bottom of the unit to top,
pins 1 to 12, for the relay outputs, and pins 1 to 4 for the 2 digital input connector. Devices
driven by the relays are connected to a 12-way screw terminal plug similar to the one
used on the Universal analogue inputs. Available alarm outputs start from alarm channel
1 up to the maximum number of alarms allocated. For 12-way connector; torque setting
0.4 Nm/3.5 lbf-in. Do not over tighten
The Relay Card will be fitted with a link in the Normally Closed (NC) position on chan-
nels 1 to 6. The link can be moved manually to the Normally Open (NO) position if
required.
The Alarm cards are mounted vertically in the unit and the rear connections for the
alarm card are vertical. If the 6 relay output/2 input card is fitted the inputs are located in
the 4 pin connector towards the top of the recorder.
Ethernet Interface
The Ethernet connection is part of the main pcb. A separate socket is provided at
the rear of the unit. This is an 8-way RJ45 socket Molex 95040-288‘‘ used for standard
Ethernet connections.
C H 1 C H 2 C H 3 C H 4 C H 5 C H 6
1 2 3 4 5 6 7 8 9 1 2 3 4 10 11 12
Input only
I/P 1 I/P 2
6 relay output/2 digital input card
4 Relay Output card
NC NC NO NC NO NC NO NC NO NC NO NO
TD+
TD-
RD+
RD-
1
2
3
4
5
6
7
8
locating pins
(not connected)
2
4 6 8
7 5 3 1
A
B