PT495 Series Detector
(Ultra1000)
Rev 5.11
11
Transmitter Wiring
Follow steps below for installation.
1.
Remove the enclosure cover and un-plug the transmitter board by simply
moving the thumb screws in counter-clockwise direction until they have
loosened up. Slowly pull the transmitter board and detach the ribbon cable.
Do not completely un-screw or remove the thumb screws from the transmitter
board.
2.
Using a 3 conductor cable connect the termination board with the monitor or
controller as shown in figure 4. A shielded instrumentation cable must be
used to connect the detector to the controller for power and signal output.
Refer to the cable size chart at the end of this section for proper cable.
3.
If the serial communication port is to be used on the transmitter then connect
RS485 terminal to the Communication Port of the PLC or the Control monitor
using data quality type Shielded cable. Two (2) core cable is used for Half-
Duplex RS485 data communication.
4.
For Audio / Visual alarm connection or Alarm Relay Dry Contact, refer to
figure 5 for wiring diagram. Be sure that the power rating of the alarm device
does exceed the Ampere rating of the alarm relay contacts. See relay ratings
in the specification section of the manual.
5.
Reconnect the transmitter board with the connection board with the 10 pin
ribbon cable. Mount the transmitter board on two 2 stand-offs using thumb
screws on the board.
Note: Do not apply excessive force to tighten the
screws
.
6.
Place the cover back on the enclosure.
Caution
: Cable Shield wire should be grounded at the controller or PLC
side not inside the detector enclosure.
