Aalborg GFC - Manual (Page 7)

3
PIN FUNCTION
1 0 to 5 VDC Flow Signal Common
2 0 to 5 VDC Flow Signal Output
3 Common
4 Open (Purge)
5 Common, Power Supply
6 (unassigned)
7 +12 VDC (+24 VDC*) Power Supply
8 Remote Setpoint Input
9 4 to 20 mA (-) Flow Signal Return (use with 14)
10 Remote Setpoint Common (use with 8)
11 +5VDC Reference Output for Remote Setpoint
12 Valve Off Control
13 Auxiliary +12 VDC (+24 VDC*)
Power Output (For Loads <100 mA)
14 4 to 20 mA (+) Flow Signal Output
15 Chassis Ground
WARNING: DO NOT CONNECT 24Vdc POWER SUPPLY UNLESS YOUR
GFC CONTROLLER WAS ORDERED AND CONFIGURED FOR 24Vdc.
Important Notes:
In general, “D” Connector numbering patterns are standardized. There are, how-
ever, some connectors with nonconforming patterns and the numbering sequence
on your mating connector may or may not coincide with the numbering sequence
shown in our pin configuration table above. It is imperative that you match the
appropriate wires in accordance with the correct sequence regardless of the par-
ticular numbers displayed on your mating connector.
Power must be turned OFF when connecting or disconnecting any cables in the system.
The power input is protected by a 1600mA M (medium time-lag) resettable fuse.
If a shorting condition or polarity reversal occurs, the fuse will cut power to the
flow transducer circuit. Disconnect the power to the unit, remove the faulty con-
dition, and reconnect the power. The fuse will reset once the faculty condition has
been removed.
Use of the GFC flow transducer in a manner other than that specified in this manu-
al or in writing from Aalborg
7, may impair the protection provided by the equipment.
ƽ
FIGURE 2-1 GFC 15-PIN “D” CONNECTOR CONFIGURATION
*+24 VDC power supply configuration is optional for only GFC17/37/47 models.
5 & 7 +12 VDC (+24 VDC*) POWER SUPPLY
8 & 10 0-5 VDC OR 4-20 mA REMOTE SETPOINT
9 & 14 4-20 mA OUTPUT
10 & 11 +5 VDC CONTROL SOURCE
1 & 2 0-5 VDC OUTPUT
3 & 4 PURGE
3 & 12 VALVE OFF CONTROL
5 & 13
AUXILIARY +12 VDC (+24 VDC*) POWER
OUTPUT (FOR LOADS <100 mA)