Detcon PI-600 - Manual (Page 16)

3.4.4 Installation Procedure
a) Securely mount the sensor junction box in accordance with recommended practice. See dimensional drawing (Fig. 2).
b) Remove the junction box cover and un-plug the control circuit by grasping the two thumb screws and pulling out-
ward.
c) Observing correct polarity, terminate 3 conductor field wiring, RS-485 wiring, and applicable alarm wiring to the sensor
base connector board in accordance with the detail shown in Figure 3. Normally open and normally closed Form C dry
contacts (rated 5 amp @ 150VAC; 5 amp @ 30VDC) are provided for Fault, Alarm 1, and Alarm 2.
Note: Per U.L. approval, these relays may only be used in connecting to devices that are powered by the same volt-
ages.
d) Position gold plated jumper tabs located on the connector board in accordance with desired Form C dry contact
outputs: NO = Normally Open; NC = Normally closed (see f igure 3).
PI-600 Toxic Gas Sensors PG.16
NC
ALARM 1
W
H
T
B
L
K
Y
E
L
B
LU
MA
VDC Power In
NO
NC
NO
NC
NO
N
O
/N
C
C
O
M
N
O
/N
C
C
O
M
N
O
/N
C
C
O
M
FAULT ALM-2 ALM-1
Alarm Dry Contacts
ALARM 2
FAULT
R1
A
B
A
B
4-20 mA Output
RS-485 In
RS-485 Out
Optional 4-20 mA
Signal Developing Resistor
Use 250 ohm 1/4w
JUMPERS
UN-USED
Jumper Programmable Alarm Outputs
Normally Open or Normally Closed
Sensor
Place un-used alarm programming
jumper tabs here
Figure 3
4 3/4"
3/4" NPT
1/4" Dia.
Mounting Holes
7 1/4"
6 1/8"
5 1/2"
3/4" NPT
Rain
Shield
2"
2 1/8"