KEPCO BOP 5-20DL, Operator'S Manual

Page: 53 / 70

BOP 5-20DL 081915
3-19
FIGURE 3-21. PROGRAMMING CIRCUIT FOR DRIVING OUTPUT CURRENT WITH
A HIGH IMPEDANCE SOURCE
3.5.5 REMOTE CONTROL OF VOLTAGE LIMITING
The E
O
Limit circuit can be configured to use a single external 0 to 10V d-c programming source
to symmetrically control ± Voltage Limits as shown in Figure 3-22. The circuit functions in a
manner similar to the I
O
Limit circuit (refer to Paragraph 3.4.5), except that the voltage limit feed-
back is derived by means of a voltage divider across the BOP output.
The + and – voltage limit can be controlled independently by individual 0 to 10V d-c sources, as
illustrated in Figure 3-23.
NOTE: The front panel ± E
O
LIMIT controls serve as a back-up when external voltage limit pro-
gramming is used. The front panel VOLTAGE LIMIT CONTROLS should be set to their
maximum positions if full range remote control of the BOP voltage limit is desired.
FIGURE 3-22. SYMMETRICAL REMOTE CONTROL OF VOLTAGE LIMIT
BOP CURRENT
CONTROL CHANNEL
NOTES:
1. Set MODE Switch to CURRENT and CURRENT
CONTROL switch to OFF.
2. Local sensing shown. Remote sensing not
recommended for Current control.
3. On Rear Programming Connector:
remove jumper between terminals (15) and (C),
add jumper between terminals (2) and (4).
4. For inductive loads in excess of 0.5mH, the BOP
output response may be optimized by placing a
capacitor across terminals (16) and (18) of the
Rear Programming Connector (
I
o COMP AMP).
I
o ZERO
POWER
STAGE
COMMON
ZERO
+
PREAMP
"B"
-
2
19
I
o COMP
AMP
+
-
DRIVER
R
G
A
T
E
S
16 18
LOAD
COM
S
OUT
S
SIGNAL
GROUND
15
C
13
4
10K
10K
CURRENT
CONTROL
PART OF REAR PROGRAMMING CONNECTOR
HIGH Z
INPUT
SOURCE
0 TO ±10V
BIPOLAR
PROGRAMMER
(EXTERNAL)
3043705
22
C
COM
OUT
28
10V
+
10V
+
ON
OFF
CURRENT
PROGRAMMING
INPUT
3043888
+
22
28
C
+
10V
10V
-
+
-
+
+
-
6
32
3
+
+
-
(+)Eo LIMIT-
AMP (EXT)
(+)Eo LIMIT-
AMP (INT)
(-)Eo LIMIT-
AMP (INT)
(-)Eo LIMIT-
AMP (EXT)
(+)Eo LIMIT
CONTROL
BIAS 15V
(-)Eo LIMIT
CONTROL
COMMON
BOP Eo
LIMIT CHANNEL
PART OF REAR PROGRAMMING CONNECTOR
57.6K
57.6K
NOTES:
1. Remote sensing shown (links removed). For local sensing
disconnect leads between S terminals and load, then install
links between COM and S terminals and between OUT and
S terminals.
2. On Rear Programming Connector remove jumper between
terminals (3) and (32) and install jumper between (32) and (6).
REMOVE
SENSING LINK
REMOVE
SENSING LINK
DRIVER
SIGNAL
GROUND
S
POWER
STAGE
COM
OUT
LOAD
S
±
E o LIMIT
CONTROL
0-10V
(EXT.)
+
-
+
-
+
G
A
T
E
(-)Eo LIMIT-
COMP AMP
(+)Eo LIMIT-
COMP AMP