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16
Installation and Operation
3.5
Alarm Outputs
CAT3 provides an optional High/Low Flow Alarm feature. Alarms
require an optional circuit board, PCA184. The Alarm option is not
available when the AC Power option is equipped. The drawings below
illustrate the typical connections and switch settings for various alarm
options.
Hi/Lo Alarm Relay
DC+
NC1
DC-
COM1
SIG+
NO1
SIG-
ANLG
PULSE+
PULSE-
N/C
N/C
N/C
Hi/Lo Alarm TTL(0-5V)
DC+
ALARM1
DC-
COM
SIG+
SIG-
ANLG
PULSE+
PULSE-
N/C
N/C
N/C
HP-312
High/Low-Nomally Closed
High/Low-COM
High/Low-Nomally Open
USER DCS
+
Alarm
Indicator
-
1
PCA184
SW1
1
PCA184
SW1
CAT3
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