It is recommended that the cable and connector should be made up, connected to the unit and
sealed with the EExd barrier gland in a workshop before taking for mounting on site.
All connections to the unit are made via the single 12 way connector mounted in the base
connector box.
Remove the 4 x M8 Hexagon bolts holding the base connector box to the MIC unit and
remove the base connector box.
.
Fit the cable through the EExd barrier gland
Fit the cable through the threaded gland hole in the base connection box and allow approx
100mm of free cable on the inside to connect to the 12 way cable connector.
Screw the EExd barrier gland into the base connector box and maintain approx 100mm of
cable on the inside of the box to enable the cable connector to be freely inserted into the MIC
unit base connector.
Fit the 12 way connector and make the connections as designated in the table below.
Connect the 12 way cable connector into the matching connector in the base of the MIC unit.
Make sure the connector is fitted home properly in the camera integral plug (requires approx.
two and a half turns of the socket threaded ring to fasten the two halves of the connectors
together properly).
Fit the base connector box back to the MIC unit and fasten using the 4 x M8 hexagon bolts
Ensure that there are no trapped cables.
Ensure there is some slack cable in the connector box then tighten up and seal the EExd
barrier gland as per the instructions included with the gland..
The unit with the cable tail is now ready for on site installation
Electrical connections
The connector pin allocations are as follows:
Connector
Pin
Signal Name Description.
Cable Wire
Type
A Video Output. Video Signal output to control room Coax core
B Video Return. Video Signal Ref output to control room Coax screen
C Tamper Switch. Connection C to D will provide an alarm to the control 24 AWG core
D Tamper Switch return. room via telemetry. 24 AWG core
E Washer drive return. TTL ref output can be used to drive external relay for
wash operation option.
22 AWG core
F Washer drive. TTL output can be used to drive external relay for wash
operation option.
22 AWG core
G Full Duplex Tx A. Telemetry Output RS 485. Pair 1
H Full Duplex Tx B. Telemetry Output.RS485. Pair 1
J Full Duplex Rx A.
Half Duplex Tx/Rx A.
Telemetry I/O to RS485. Pair 2
K Full Duplex Rx B.
Half Duplex Tx/Rx B.
Telemetry I/O to RS485. Pair 2
L Power input 1. Low volt AC or DC power input 15 Volts AC or DC. 22 AWG core
M Power input 2. Low volt AC or DC power input 15 Volts AC or DC. 22 AWG core
Video output signal conforms to CCIR PAL 1V Composite format. (NTSC format is
available on request).
Telemetry signals all conform to the RS485 / RS422 standard.
The unit continuously monitors incoming telemetry whether in full or half duplex mode.
MIC1-440 Instruction Manual Page 7 of 43 Issue 2
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