VC-M-1
Installation, Operation & Maintenance Manual
ANTI-ARCING FEATURE
The VC-M-1 temperature control module is equipped with our innovative
Anti-arcing
feature that will help prevent
damage to the control module and main frame in the event the module is inadvertently removed under load. This
feature should not be considered a substitute for proper handling procedures, but rather a supplemental protection
mechanism.
If this control module is inserted into a main frame not equipped for
Anti-arcing
, the instrument will not provide
power to the heater and a
“tOh”
error code will be displayed. If this condition occurs, the
Anti-arcing
jumper can
be moved from the #2 & #3 enabled position to the #1 & #2 disabled position. By repositioning the jumper in the
Anti-arcing
disabled position, the module will function in main frames not equipped with the
Anti-arcing
feature.
Disabling the anti-arcing feature can void your two-year warranty in the event the module is removed from
main frame under load, as a resulting in damage to printed circuit board traces.
NOTE:
This feature will only work with updated main frames and should not be considered a substitute for proper
handling procedures. Disabling the anti-arcing feature could void your two-year warranty if damage
occurs.
NOTE:
The
Anti-arcing
feature will not prevent damage if the jumper is not in the enabled position.
NOTE:
The
Anti-arcing
feature of this module will not prevent damage if the module is used in a main frame not
properly equipped for
Anti-arcing
.
Older mainframes may not be equipped with the
Anti-Arcing
feature.
They can be upgraded with
Anti-Arcing
by installing Contact (R144-017) in position #3 of Card Edge
Connector (CKF-312-G). Please contact PCS for further instructions.
STANDARD OPERATING FEATURES
NORMAL OPERATIONS: Auto Keys
When the power switch on the module is turned ON, the control module will look at the existing zone temperature
and determine if the
“SOFT START”
cycle is needed. The
“SOFT START”
cycle will be activated any time
the zone temperature is below 212
°
F (100° C) when the module is turned on. Upon completion of the
“SOFT
START”
cycle the module will automatically switch to the automatic control mode. At this time the control
module will apply the necessary power to bring the process temperature up to the set point temperature and
maintain it, if set point temperature is above 212
°
Fahrenheit (100° Celsius).
SETTING OPERATING TEMPERATURE: Up & Down Key
The set point temperature is normally preset at 400
°
Fahrenheit (204° Celsius) at the factory. You can change the
set point temperature at any time by pressing the
“UP” arrow
or
“DOWN” arrow
keys. The module will remember
the last entered set point temperature when it is shut off.
SOFT START KEY:
The
“SOFT START”
cycle applies a reduced output power to the heater at start up. The module only activates
“
SOFT START”
if the initial process temperature at start up is below 212
°
F (100° C). The output power is
gradually increased while the zone temperature is below 212
°
F (100° C). The
“SOFT START”
cycle time is factory
set at 5 minutes. The time duration may be changed by scrolling through the
MENU
for the
“SSt”
parameter. (range
0 to 30 minutes)
MANUAL OPERATION KEY:
To operate the
μATC
-20 control module manually, push the
“MAN”
key. The percentage of output power will
be displayed in the set point window. Push the
“UP”
or
“DOWN”
keys to change the output percentage. If
thermocouple feedback is not available, the process temperature window will show the error code
“tCO”
or
“tCr”
. When switching from
“AUTO”
to
“MAN”
mode, there is a bump less transfer of power.
NOTE: Other Alarms will not operate in the manual mode.
Phone: 800-521-0546 E-mail: sales@pcs-company.com Fax: 800-505-3299
www.pcs-company.com
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