Cosmos PS-7 - 6.2 Wiring Instructions

16
DC-ITD-PS7MAN01.A www.dodtec.com
JAN 2019 815-788-5200
PS-7 Manual
NOTE: The protection seal on the base unit is to protect the connector and internal piping when attaching the
base unit. This seal is not necessary after the main unit is attached. Please dispose of it properly in
accordance with company disposal regulations.
If multiple units are to be mounted in a row, ensure that there is enough space between each unit (at least 3
cm on either side is recommended) to allow the main unit to be removed and reattached.
6.2 Wiring Instructions
Terminal Board
Sign
Polarity
Function
TB1
P
+
Power supply (24 V DC)
N
-
G
+
Gas concentration output (4-20 mA DC)
H
-
E
Ground
TB2
ZA1
Gas alarm contact output (1
st
level)
(no voltage contact 1a)
Rated load: 125 V AC or 30 V DC, 0.5-A resistance load
ZA2
Gas alarm contact output (2
nd
level)
(no voltage contact 1a)
Rated load: 125 V AC or 30 V DC, 0.5-A resistance load
ZC
ZA1, ZA2 common
TA
+
Trouble alarm
(Open collector: N/C)
Rated load: 30 V DC, 30-mA resistance load
TC
-
Trouble alarm common
Warning
Be sure to push the latches back as far as they will go. If the latches are not back behind the
locked/ unlocked line, normal gas detection will not be performed.