Emerson VSS Manuel D’Utilisation
35
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
SCREWDRIVER TO PRY LOCKING COLLAR INTO
POSITION.
LOOSEN LOCKING COLLAR BEFORE SLIDING THE
COLLAR DOWN ON THE SHAFT. DO NOT USE A
SCREWDRIVER 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. Briefl y, the steps are as
follows.
step process that must be done for each actuator
installed of the compressor. Briefl y, 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 ro-
tational positions of the slide valve it controls.
The calibrated actuator will output 0 VDC at the
minimum position and 5 VDC at the maximum
position.
that it knows the minimum and maximum ro-
tational positions of the slide valve it controls.
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 motor (either the
capacity or volume) has to be calibrated. This
instructs the control panel to learn the rotational
0% position & rotational 100% position of the slide
valve travel.
corresponding to the actuator motor (either the
capacity or volume) has to be calibrated. This
instructs the 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.
Because there is an optical sensor on this motor, do
not attempt calibration in direct sunlight.
ACTUATOR MOTOR CONTROL
MODULE CALIBRATION PROCEDURE
MODULE CALIBRATION PROCEDURE
1.
Disable the Slide Non-Movement Alarm by
going to the “Setup” menu on the control
panel and choosing “Alarm Disable” for the
Slide Non-Movement Option. (If applicable).
going to the “Setup” menu on the control
panel and choosing “Alarm Disable” for the
Slide Non-Movement Option. (If applicable).
2.
Completely shut off the power to the control
panel completely.
panel completely.
3.
If not already done, mount the slide valve
actuator per (“Vilter Actuator set up for
Capacity and Volume Slide Motors). Next,
wire the actuator per the attached wiring
diagrams, using the already installed electri-
cal conduit to run the cables. The old wiring
can be used to pull the new cables through
the conduit 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 conduit. This prevents
the DC position transmitter cable from pick-
ing up electrical noise from the AC power
cable. Do not connect either of the cables
to the actuators yet.
actuator per (“Vilter Actuator set up for
Capacity and Volume Slide Motors). Next,
wire the actuator per the attached wiring
diagrams, using the already installed electri-
cal conduit to run the cables. The old wiring
can be used to pull the new cables through
the conduit 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 conduit. This prevents
the DC position transmitter cable from pick-
ing up electrical 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 gear-
motors on early units, you must remove the capaci-
tors and associated wiring from inside the control
panel. This is necessary to prevent electrical damage
to the new actuator motor.
motors on early units, you must remove the capaci-
tors and associated wiring from inside the control
panel. This is necessary to prevent electrical damage
to the new actuator 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 actua-
tors 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.
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 actua-
tors 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 fl uctuate wildly during the
calibration process. To prevent damage to
the actuators, do not connect the yellow
power cable or the gray position transmitter
cable until instructed to do so later on.
the actuator will fl uctuate wildly during the
calibration process. To prevent damage to
the actuators, do not connect the yellow
power cable or the gray position transmitter
cable until instructed to do so later on.
6. Open the plastic cover of the capacity motor by
removing the four #10 screws.
Slide Valve Actuator Installation & Calibration