Honeywell Modutrol IV M934D Product Data page 8

SERIES 90 MODUTROL IV™ MOTORS
STROKE
POTENTIOMETER
POWER END
OF MOTOR
Fig. 8. Potentiometer location and stroke adjustment setup
for non-spring return Series 90 Motors
Interface Module
Q7130
Q7230
Q7630
221508A
with shunt resistor
221508A
used as a converter to
Series 70 with no slaves
221508A
used as a converter to
Series 70 with 1 or more
slaves
Q7330A1004
Adjustable timing for M9181D1024
The timing potentiometer (the second from the right, see
Fig. 8) sets the timing to 1minute, if turned fully CCW
minutes if turned to its middle point and 4 minutes if turned fully
CW .
63-2631
LINEARIZATION
POTENTIOMETER
SENSITIVITY
POTENTIOMETER
TIMING POTENTIOMETER
(M9181D1024 ONLY)
AUXILIARY
SWITCH CAMS
M13706
Table 6. Position of Linearization Potentiometer
Control signal
4-7V; 6-9V;10.5-13.5V;
CW or CCW
Voltage/current could be
adjust by Span and Zero
potentiometer on module
CW or CCW
14-17V; CW or CCW
Series 90 controller; more
Series 90 units as slaves
CW or CCW
4 - 20mA
4-20mA
W936 controller
To set the stroke between 90° and 160° follow the procedure
below:
1. Turn the stroke potentiometer fully CW
1/8 in. straight-blade screwdriver to set 160° stroke.
2. Set the maximum position using an external 135 Ohm
potentiometer.
3. Turn the sensitivity potentiometer, so that the shaft
reaches the final position of selected stroke.
4. Turn the stroke potentiometer CCW
begins to move. Then turn potentiometer back slightly to
have the position correspond to the sensitivity potenti-
ometer.
5. Make sure the minimum position corresponds, as well.
Linearization Potentiometer
Series 90 motors use a linearization potentiometer. This
potentiometer should be adjusted only when Series 90 is used
with an interface module, which converts the control from
series 90 to series 70. If you use an interface module, set the
linearization potentiometer according to the switch on the
interface module. Turn the potentiometer fully CW
driving the motor CW, turn the potentiometer fully CCW
for driving the motor CCW. Table 6 summarizes the modules
and the positions of the linearization potentiometer.
Linearization Potentiometer
CW or CCW according to the
CW/CCW switch on the module
CW or CCW according to the
CW/CCW switch on the module
CW or CCW according to the
CW/CCW switch on the module
Middle point (no linearization)
Just CW
Middle point (no linearization)
Only CW
, 2
8
until the shaft
Notes
Customer is able to adjust the range of
input signal the same way Series 70
units with adjustable span and zero.
Customer is able to select the number
of slave units to connect together
Only one unit (no slaves)
Customer is able to select the number
of slave units to connect in parallel
Voltage range is approximately 0.7
(fully closed) to 1.9 Vdc (fully open)
, using a
for