Vilter VSM 71-701, Operation And Service Manual

Page: 34 / 244

34
Installation & Calibration
SLIDE VALVE ACTUATOR
INSTALLATIONS INSTRUCTIONS
Caution
WHEN INSTALLING THE OPTICAL SLIDE
MOTOR, LOOSEN LOCKING COLLAR
BEFORE SLIDING THE COLLAR DOWN
ON THE SHAFT. DO NOT USE A SCREW-
DRIVER TO PRY LOCKING COLLAR INTO
POSITION.
OVERVIEW
Calibration of an optical slide valve actuator is
a two step process that must be done for each
actuator installed of the compressor. Briefly,
the steps are as follows.
1) The actuator motor control module, located
inside the actuator housing, is calibrated so
that it knows the minimum and maximum
rotational positions of the slide valve it con-
trols. The calibrated actuator will output 0
VDC at the minimum position and 5 VDC
at the maximum position.
2) After the actuator motor control module has
been calibrated for 0-5Volts, the controlling
channel corresponding to the actuator mo-
tor (either the capacity or volume) has to be
calibrated. This instructs the Vission/ Van-
tage control panel to learn the rotational 0%
position & rotational 100% position of the
slide valve travel.
PLEASE NOTE:
Because there is an optical sensor on this
motor, do not attempt calibration in direct
sunlight.
ACTUATOR MOTOR CONTROL
MODULE CALIBRATION PROCEDURE
1. Disable the Slide Non-Movement Alarm
by going to the “Setup” menu on the
Vission/Vantage and choosing “Alarm
Disable” for the Slide Non-Movement
Option. (If applicable).
2. Completely shut off the power to the
Vission/Vantage control panel com-
pletely.
3. If not already done, mount the slide
valve actuator per (“Vilter Actuator set
up for Capacity and Volume Slide Mo-
tors). Next, wire the actuator per the
attached wiring diagrams, using the al-
ready installed electrical conduit to run
the cables. The old wiring can be used
to pull the new cables through the con-
duit to the control panel. The cables
may also be externally tie-wrapped to
the conduit
. Run the yellow AC power
cable(s) and the gray DC position
transmitter cable(s) in different con-
duit.
This prevents the DC position
transmitter cable from picking up elec-
trical noise from the AC power cable.
Do not connect either of the cables to
the actuators yet.
In addition, if the actuators are replacing old
gearmotors on early Vission/Vantage units,
you
must remove the capacitors and associated wir-
ing from inside the control panel.
This is neces-
sary to prevent electrical damage to the new ac-
tuator motor.
4. When completing the calibration of
the new actuators, the motors are
signaled to move to below 5%. This
may not completely occur when
exiting the calibration screen due to a
“program timer”. HOWEVER, when
the compressor actually starts, the
motors will travel below 5% and
function correctly. The user may see
that the actuators are not below 5%
after calibration and try to find the
reason. If the calibration screen is re-
entered right away and then exited,
the timer will allow the actuator to go
below the 5% on the screen. This
may be perceived as a problem; in
reality,it is not.
5. Note:The 0 to 5V-position transmitter
output of the actuator will fluctuate wildly