Joyce MA7007 - Manual (Page 7)

7
Potentiometer (for 12 VDC and 120 VAC Actuators)
The potentiometer has a 0 -10 K Ohm resistance range. The actual resistance value is a variable
that is based on the stroke length. It is measured between the blue and white wires . Values have
a +/-0.3 K Ohm tolerance. Refer to the Figure 6 for the potentiometer schematic.
Ohm value between blue & white wire
Stroke
(mm)
Approximate Resistance
(Ohm)
100 0.3 – 8.0 K
150 or 153 0.3 – 8.5 K
200 0.3 – 9.1 K
300 or 305 0.3 – 8.6 K
457 0.3 – 9.2 K
Tolerance ±0.3K
Figure 6 – Potentiometer schematic Figure 7 – Resistance values
Yellow
White Black
Figure 8 – DC Wiring Figure 9 – AC Wiring
1-9 Mounting Guidelines
Installation Guidelines
The actuator can be mounted in any orientation but the load should be attached to the actuator and
mounted axially so no side load is imposed on the actuator. Figure 10 below shows an axial load in
a horizontal plane. Vertical loads can also be mounted axially.
Figure 10 –Example of Axial Load
Figure 11 illustrates a horizontal side load, but it is also possible to impose a side load on a
vertically mounted actuator. Side loading is not recommended in any orientation.
Figure 11 – Example of Side Load - NOT recommended