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Explosion proof (Ex d) installation - without Docking Station
4.1
Mechanical installation without
Docking Station
The instrument can be mounted for measuring gases in
ambient air or inside of a duct/pipe.
1. Use M6 (1/4'') bolts with hex socket caps to mount the
enclosure to one of the following options.
Option
Mounting on a flat surface
Mounting on a pole
Mounting on a duct/pipe
4.2
Electrical installation without docking
station
For recommended tightening torques and admissible wire
specifications see 17.3 Cable specifications.
4.2.1 Wiring tables
4-20mA / Power
Pin
Mark
Function
1
4-20 /
4 to 20 mA signal (Operation as source or
S
sink)
2
V-
3
+
V+
Polytron 5100 EC 4-20mA / Power
Refer to figure H on the fold-out page.
Pin
Mark
Wire
Function
color
1
4-20 /
brown 4 to 20 mA signal (Operation as
S
source or sink)
2
black
V-
3
+
red
V+
Relay connector
The relay labels (NO, COM, NC) represent the default state
(normally energized) of all relays while the instrument is
powered.
Pin
Mark
Relay
1
NC
A1
A1
2
COM
A1
3
NO
A1
4
NC
A2
A2
5
COM
A2
6
NO
A2
10
Use drilling template and for
Polytron 57x0 IR the spacer
(part number 68 12 617)
Use pole mount kit (part num-
ber 45 44 198)
Use duct mount kit (part num-
ber 68 12 300)
Normally Closed
Common
Normally Open
Normally Closed
Common
Normally Open
Pin
Mark
Relay
7
NC
FLT
Fault
8
COM
Fault
9
NO
Fault
4.2.2 Figures on the fold-out page
Fig-
Connecting diagram for instruments
ure
G
Enclosure grounding
G1
PCB unit Polytron 57x0 IR
G2
PCB unit Polytron 5200 CAT / Polytron 5310 IR
H
Enclosure grounding and internal wiring of Polytron
1)
5100 EC
I1
4-20 mA (Current source)
I2
4-20 mA (Current sink)
I3
Stand-alone, relay only
H1
2-wire installation of Polytron 5100 EC
J
Relay board installation
1) For instruments without relay option, install protective earth
potential equalization
.
4.2.3 Preparing the electrical installation
1. Loosen set-screw (2) and unscrew lid from instrument,
see figure A on the fold-out page.
2. Pull-out the PCB unit.
3. Proceed with the figure corresponding to your Polytron
model and signal output, see fold-out page.
4.2.4 Connecting the instrument as stand-alone
1. Pull off the 3-pin connector.
2. Connect the wires for power to the appropriate terminal as
indicated in figure I3 on the fold-out page.
3. Bridge pin 1 and 2 of the 3-pin connector.
4. Connect the relay wires, see 4.2.5 Electrical connection of
relay option
5. Close the instrument, see 4.2.8 Closing the instrument.
4.2.5 Electrical connection of relay option
The following tables show the status of a connected alarm
indicator and whether it indicates faults such as power loss to
the transmitter.
The relay's behavior depends on the alarm configuration and
the relay contact to which the alarm indicator is connected.
Instructions for use
Normally Closed
Common
Normally Open
1)
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