4.5.2 Calibration of Zero and Span - CPT
The settings of Zero and Span have been calibrated at the factory. However, if re-calibration is required, proceed as follows:
Use the hand wheel to drive the actuator to a half open position.
Apply power (or use the manual override) to drive the actuator to its
fully closed position (clockwise rotation).
When the actuator is in the fully closed position, adjust the ZERO dial on
the CPT board until a reading of 4mA is achieved.
Apply power (or use the manual override) to drive the actuator to its fully
open position (counter-clockwise rotation).
When the actuator is in the fully open position, adjust the SPAN dial on the
CPT board until a reading of 20mA is achieved.
4.6 Proportional Control Unit (PCU-A)
PCU-Rev-4 High Performance Controller, using 10 bit A/D converter and 8bit microprocessor technology.
PCU-REV-4 FEATURES
MODEL PCU-Rev-4
POWER 85 ~ 260 VAC Free Voltage ± 10%, 50/60Hz 4 VA Max
INPUT SIGNAL 4~20mA, 1~5V DC, 2~10V DC, 0~5V DC, 0~10V DC
INPUT IMPEDANCE 250Ω
OUTPUT SIGNAL 4~20mA, 1~5V DC, 2~10V DC, 0~5V DC, 0~10V DC
OUTPUT IMPEDANCE 750Ω Max
OUTPUT CONTACT 1 (Fault monitor)
DELAY TIME ADJUSTMENT 0.05~7.5 seconds
DEADBAND ADJUSTMENT 0.12mA DC Max
RESOLUTION ADJUSTMENT 0.0625~1mA (0.0625mA+step no. x 0.0625mA, 15 steps total)
AMBIENT TEMPERATURE -10oC to +70oC
AMBIENT HUMIDITY 90% RH Max (non-condensation)
DIELECTRIC STRENGTH 1500V AC 1 Minute (input to output, power to ground)
INSULATION RESISTANCE Minimum 500V DC 30MΩ
CAUTION: HAZARDOUS VOLTAGE. TURN OFF ALL POWER BEFORE SETTING YOUR ACTUATOR.
The factory settings of the PCU card are
normally set according to the customer
requirements at the time of order. However, we
strongly recommend that input power, signal input
selection and dip switches are to be verified prior to
the actuator start up.
4.7 Proportional Control Unit (PCU-D)
PCU-Rev-D1 High Performance Controller, using 10 bit A/D converter and 8bit microprocessor technology.
PCU-REV-4 FEATURES
MODEL PCU-Rev-D1
POWER 24V DC Voltage ± 15% (36V DC Max)
INPUT SIGNAL 4~20mA, 1~5V DC, 2~10V DC, 0~5V DC, 0~10V DC
INPUT IMPEDANCE 250Ω
OUTPUT SIGNAL 4~20mA, 1~5V DC, 2~10V DC, 0~5V DC, 0~10V DC
OUTPUT IMPEDANCE 750Ω Max
OUTPUT CONTACT 1 (Fault monitor)
DELAY TIME ADJUSTMENT 0.05~7.5 seconds
DEADBAND ADJUSTMENT 0.12mA DC Max
RESOLUTION ADJUSTMENT 0.0625~1mA (0.0625mA + step no. x 0.0625mA, 15 steps total)
AMBIENT TEMPERATURE -25oC to +80oC
AMBIENT HUMIDITY 90% RH Max (non-condensation)
DIELECTRIC STRENGTH 1500V AC 1 Minute (input to output, power to ground)
INSULATION RESISTANCE Minimum 500V DC 30MΩ
CAUTION:
HAZARDOUS VOLTAGE. TURN OFF ALL POWER BEFORE SETTING YOUR ACTUATOR.
The factory settings of the PCU card are normally set
according to the customer requirements at the time
of order. However, we strongly recommend that input
power, signal input selection and dip switches are to
be verified prior to the actuator start up.
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