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83
-
507
-
013 Rev. D
45
CAUTION
COM (J1
-
12), VPGM_RTN (J1
-
22) AND IPGM_RTN (J1
-
23) te
rminals of J1
connect internally to the
–
Sense potential (
-
S). Do not connect these term
i-
nals to any potential other than
–
Sense (
-
S), as it may damage the power
supply.
CHAPTER 6 REMOTE ANALOG PROGRAMMING
6.1 INTRODUCTION
The rear panel connector J1 allows the
user to program the power supply Output Voltage and Current
with an analog device. J1 also provides monitoring signals for Output Voltage and Output Current.
The programming range and monitoring signals range can be selected between 0
-
5V or 0
-
10V using
the setup switch SW1. When the power supply is in Remote Analog programming mode, the serial
communication port is a
c
tive and can be used to query the power supply settings.
6.2 LOCAL/REMOTE AN
ALOG INDICATION
C
ontact 8 of J1 (Fig.4
-
2, Item 5) acce
pts TTL signal or Open
-
Short contact (referenced to J1
-
12) to
s
e
lect between Local or Remote Analog programming of the Output Voltage and Current.
In Local mode, the Output Voltage and Output Current can be programmed via the front panel
VOLTAGE and CURREN
T encoders or via the RS232/RS485 port. In Remote Analog mode, the Ou
t-
put Voltage and current can be programmed by analog voltage or by programming resistors via J1
contacts 9 and 10 (refer to Sections 6.4 and 6.5). Refer to Table 6
-
1 for Local/Remote Anal
og control
(J1
-
8) fun
c
tion and Setup switch SW1
-
1, 2 settings.
SW1
-
1, 2 se
t
ting
J1
-
8 function
Output Voltage/
Current setting
Down (default)
No effect
Local
“0” or Short
Remote
Up
“1” or Open
Local
Table 6
-
1: Local/Remote Analog control function
6.3 LOCAL/REMOTE ANALOG INDICATION
Contact 21 of J1 (Fig. 4
-
2, Item 5) is an open collector output that indicates if the power supply is in
Local mode or in Remote Analog mode. To use this output, connect a pull
-
up resistor to a voltage
source of 30Vdc m
aximum. Choose the pull
-
up resistor so that the sink current will be less than 5mA
when the output is in a low state. Refer to table 6
-
2 for J1
-
21 function.
J1
-
8
SW1
-
1
SW1
-
2
J1
-
21 signal
Mode
Down
Down
Open
Local (FP)
Down
Up
0
0.6V
R
emote Analog
Up
Down
0
0.6V
Remote Analog
TTL “0” or short
Up
Up
0
0.6V
Remote Analog
TTL “1” or open
Down or Up
Down or Up
Open
Local (FP)
Table 6
-
2: Local/Remote Analog indication