KEPCO BOP 1000W, Operator'S Manual

Page: 133 / 188

BOP-1K 080709
4-5
4.3.1 CALIBRATION PROCEDURE USING SCPI COMMANDS
The following procedure provides a complete calibration of the unit. Steps 14 and 15 calibrate
the control signal used when the unit is a slave in series configurations. Steps 29 and 30 cali-
brate the control signal used when the unit is a master in parallel configurations. Steps 31 and
32 calibrate the control signal used when the unit is a slave in parallel configurations. There is
no need for a special calibration step when the unit is used as a master in series configurations
since the BOP output voltage (which is calibrated by this procedure) is used to control the next
unit in series.
NOTES: 1. For ZERO calibration, adjust output to obtain value closest to zero.
TABLE 4-4. CURRENT CALIBRATION MEASUREMENTS AND TOLERANCES
MODEL
SENSE
RESISTOR
VALUE
(SEE NOTE AND
TABLE 4-2)
CURRENT
ZERO
±FULL SCALE
CURRENT
±FULL SCALE
CPR LIMIT
BOP 10-75MG 0.001 Ohm
0V
±0.008mV
0.075V (MAX )
–0.075V (MIN )
±0.008mV
0.075V (MAX )
–0.075V (MIN )
±0.038mV
BOP 20-50MG 0.001 Ohm
0V
±0.005mV
0.05V (MAX )
–0.05V (MIN )
±0.005mV
0.05V (MAX )
–0.05V (MIN )
±0.025mV
BOP 36-28MG 0.001 Ohm
0V
±0.003mV
0.028V (MAX )
–0.028V (MIN )
±0.003mV
0.028V (MAX )
–0.028V (MIN )
±0.014mV
BOP 50-20MG 0.01 Ohm
0V
±0.02mV
0.2V (MAX )
–0.2V (MIN )
±0.02mV
0.2V (MAX )
–0.2V (MIN )
±0.10mV
BOP 72-14MG 0.01 Ohm
0V
±0.014mV
0.14V (MAX )
–0.14V (MIN )
±0.014mV
0.14V (MAX )
–0.14V (MIN )
±0.07mV
BOP 100-10MG 0.01 Ohm
0V
±0.01mV
0.1V (MAX )
–0.1V (MIN )
±0.01mV
0.1V (MAX )
–0.1V (MIN )
±0.05mV
REFER TO NOTES FOR SENSE
RESISTOR VALUE OTHER
THAN LISTED HERE
R
SENSE
SEE
NOTE.
SEE
NOTE A.
SEE NOTE B. SEE NOTE C.
USE SPACE PROVIDED AT
RIGHT FOR CALCULATED
VALUES.
NOTES: The following formulas are used to calculate proper calibration values for Sense Resistors other than
those recommended.
R
SENSE
=
the measured value of the sense resistor in ohms (0.001% accuracy).
I
Onom
=
Nominal (rated) current output of BOP in Amperes (e.g., for BOP 50-20M, I = 20A)
A. 0V, Tolerance = ±
(
R
SENSE
) x (0.1) x (
I
Onom
)--
result in mV.
B. (
R
SENSE
)
x (
I
Onom
)--
result in V, Tolerance =
±(
R
SENSE
) x (0.1) x (
I
Onom
)--
result in mV.
C. (
R
SENSE
)
x (
I
Onom
)--
result in V, Tolerance =
±(
R
SENSE
) x (0.5) x (
I
Onom
)--
result in mV.