Connecting equipment to the Plus Touch
15
Actuators can be connected to relay pairs 1 and 2 or 3 and 4 only. Actuators
cannot be connected to any other combination of relays. For example, you cannot
connect an actuator to relays 1 and 3.
In Plus Touch, actuators are considered “inlets with feedback”. If yours
does not
require feedback, it is considered a curtain, or, “inlet without feedback”. For more
Configuring relays for inlet actuators or curtains
Feedback potentiometers
Each actuator you connect must have a feedback potentiometer. The feedback potentiometer, which
you connect to one of the Plus Touch’ two corresponding feedback terminals, lets the control know
how far the actuator’s arm is extended.
Most linear actuators are available with potentiometer feedback and internal adjustable limit
switches. A 10,000 ohm, 10 turn feedback potentiometer is preferred, but the internal feedback
potentiometer can range between 1000 and 20,000 ohms. Potentiometers outside of this range will
affect the precision to which the Plus Touch can control the actuator.
A system operates more precisely when using the largest amount of stroke that
is feasible with the actuator. The stroke is the distance the actuator arm
extends or retracts.
If you are unsure of the potentiometer wiring for your actuator, read
Determining correct actuator feedback wiring
When routing the actuator feedback wires, do not run them in or along the
same conduit as AC-power lines. Follow the guidelines in the
Control
fundamentals guide
.
If you are measuring AC power with a digital multimeter (DMM), note that if a
limit switch opens the circuit, the DMM measures voltage after the relay switch
even if the relay is open.
The ratings of the actuator must not exceed the ratings of the Plus Touch.
Plus Touch relay ratings
: 10 A at 120/230 VAC, general-purpose (resistive)
1/3 HP at 120 VAC, 1/2 HP at 230 VAC
360 W tungsten at 120 VAC
Содержание Plus Touch Series
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