Aalborg SMV Series User Manual
Page 7
During normal operation the valve remains in the last position as it is de-ener-
gized. After powering up, the valve will be automatically closed within the first
10 seconds and after that resumes control operation.
FIG.b-1 SMV 9-PIN “D” CONNECTOR CONFIGURATION
WARNING: DO NOT CONNECT 24 Vdc POWER SUPPLY UNLESS YOUR
SMV VALVE WAS ORDERED AND CONFIGURED FOR 24Vdc VOLTAGE
(SEE POWER REQUIREMENTS LABEL). DO NOT APPLY TO THE
DIRECTION CONTROL SIGNAL (PIN 8) VOLTAGE MORE THAN 12 Vdc
Important Notes:
In general, "D" Connector numbering patterns are standardized. There are,
however, some connectors with nonconforming patterns and the numbering
sequence on your mating connector may or may not coincide with the num-
bering 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 particular numbers displayed on your mating connector.
Make sure power is 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 valve circuit. Disconnect the power to the unit, remove the faulty con-
dition, and reconnect the power. The fuse will reset once the faulty condition
has been removed.
Use of the SMV Motorized Valve in a manner other than that specified in
this manual or in writing from Aalborg
®
, may impair the protection
provided by the equipment.
3
ƽ
ƽ
,
PIN FUNCTION
1
(unassigned).
2
Common, Power Supply Minus.
3
Valve Off Control (12V CMOS Low active).
4
Speed control signal (analog 0-2.5 Vdc).
5
(unassigned).
6
Common for Speed control.
7
Valve PURGE control (12V CMOS Low Active).
8
Direction control signal (digital 12Vdc CMOS logic).
9
+12 Vdc (+24Vdc optional) Power Supply Plus.