Transmitter And Sensor Installation - MSA SMC 5100-02-IT Operating Manual

3.5

Transmitter and Sensor Installation

When all pre-wire is complete:
1. Install sensor assembly in the open hub on the module enclosure. The sensor assembly thread must be fully seated
into the hub and tightened to maintain explosion proof assembly.
2. Connect the wires which return to the controller to interface board connectors P1, P2, P3 and P4 according to
Section 3.6 Module Address Switch
3. Connect the sensor assembly cable to top transmitter board connector P2.
4. Align the headers between the top transmitter board and the lower interface board then push together.
5. Turn the rotary switch to correct sensor address if required.
6. Carefully return transmitter to enclosure, installing it over the two stand-off's. Tighten retaining screws into stand-offs.
7. Cycle power to accept module address change.
8. Establish the module address according to Section
P1 PCB Label
1
Switch
2
3
4-20
4
5 GND
6
4-20
7
1
2
3
RS 485
4
5
6
P4*
1
2
3
4
5
6
7
8
9
* P4 Connections are installed only when the optional Relays are included
** Trouble relay is a fail-safe so it is energized for normal operation, functions are labeled for normal operation.
NOTE: The starting delay period normally takes approximately 3 minutes but under some circumstances can
take longer. For optimum performance, a calibration should be performed after 24 hours of operation.
US
and as detailed in the connector tables below.
Function
IN + Digital Input SW +
IN - Digital Input SW -
IN + 4-20 mA Input +
IN - 4-20 mA Input -
Ground
OUT + 4-20 mA Output +
OUT - 4-20 mA Output -
P2
+ RS 485 (+) (A)
- RS 485 (-) (B)
S RS 485 shield (Isolated GND)
+ RS 485 (+) (A)
- RS 485 (-) (B)
S RS 485 shield (Isolated GND)
WARNING
ALARM
TRBL**
SMC 5100-02-IT Gas Sensor
3.6 Module Address Switch.
P3B PCB Label
1 P
2 S
3 G
4 P
5 S
6 G
PCB Label
N/C
COM
N/O
N/C
COM
N/O
N/C
COM
N/O
Function
VDC Power
Sentry Signal or Communication
VDC Ground
P3A
VDC Power
Sentry Signal or Communication
VDC Ground
Function
Low Alarm Relay NC
Low Alarm Relay COM
Low Alarm Relay NO
High Alarm Relay NC
High Alarm Relay COM
High Alarm Relay NO
Trouble Alarm Relay NC
Trouble Alarm Relay COM
Trouble Alarm Relay NO
3 Installation
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