Applied Air GAS-FIRED HEATERS, Installation & Operation Instruction

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CHECKOUT PROCEDURE FOR INTERFACE MODULE (IM-02)
Q7230 Adjustments
The Q7230A provides adjustable range (zero and
span) for two-wire current or voltage control. Separate
potentiometers are provided on the circuit module for
adjusting the zero point and the span. It includes a cw/
ccw switch for confi guring the motor to rotate clockwise
or counterclockwise with an increase in control signal.
1. Set Mod IV motor pots – both CW or both CCW
for your application. Use the checkout procedure in
Table 3 to ensure proper motor function.
2. Verify that the zero potentiometer is fully clockwise and
that the span potentiometer is fully counterclockwise.
(Do not exceed the stop point of the potentiometer.)
3. Select desired rotation direction [cw (electrically
normally closed) is the most common]. The following
directions apply for the clockwise setting. For
counterclockwise setting, reverse open and closed,
and reverse clockwise and counterclockwise.
Remove fi lm on switch before use. (Default switch
position is CW.)
4. For current control, connect the current input signal
to I+ (screw terminal 3) and COM (screw terminal
5). For voltage control, connect the voltage input
signal to V+ (screw terminal 1) and COM (screw
terminal 5).
5. Set the controller to output the signal required to
drive the motor to the closed position. Wait for the
motor to stop driving closed.
6. Turn the zero potentiometer slowly counterclockwise
until the motor starts to open.
7. Turn the zero potentiometer slowly clockwise
until motor is fully closed. This is defi ned as the
zero setting.
8. Set the controller to output the signal required to
drive the motor to the fully open position. Wait for
the motor to stop driving open.
9. Turn the span potentiometer slowly clockwise
until motor starts to drive closed. The difference
between the fully open position signal and the fully
closed position signal is defi ned as the operating
span.
10. Recheck the fully closed position and readjust the
zero potentiometer, if necessary. (Turn the zero
potentiometer clockwise
to close the motor
and counterclockwise to open the motor.)
11. Recheck the fully open position and readjust
the span potentiometer, if necessary. (Turn the
span potentiometer clockwise to close the motor,
counterclockwise to open the motor.) Verify the mid
point of your stroke.
Step Proper Motor Response Switch in
Clockwise Position
Switch in Counterclockwise
Position
1. Open terminals (+), (-), F Motor closes fully ccw Motor closely fully cw
2. Jumper F to (-) Motor opens fully cw Motor closes fully ccw
3. Remove either T terminal Spring return motors return to normal spring position (fully ccw for mechanically normally
closed motors, fully cw for mechanically normally open motors).
(+) and (-) denotes terminals on the controller
Table 3. Q7230/M91XX Checkout Procedure
T1 T2 F COM 1+ V+
SPAN ZERO
CCW
CW
Fig 5. Q7230A terminals and adjustments.
C000719
COM
V+
F
-
+
T1
T2
Fig 8. Typical wiring diagram for Q7230A Interface
C000720
Module and M91XXX Modutrol IV Motor with 2-10 Vdc
controller.
2
3
MOTOR CONTROLLER
2-10 Vdc
(HOT)
L1
L2
1
1
OVERLOAD PROTECTION AS REQUIRED.
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
2
MOTOR TO FULLY OPEN.
CONNECTING TO EITHER (+) OR (-) WILL DRIVE THE
3
CONNECTION.
INTERNAL MODUTROL IV