© National Instruments | 4-3
RMX Programmable Power Supplies User Manual
You can use the CONFIG settings to specify what happens when the output is turned off because
an alarm is detected. You can select to turn the output on automatically when the problem that
caused the alarm is fixed (CF03: Auto) or to leave the output turned off when the problem is
fixed (CF03: SAFE). (This parameter only applies to the OHP, FAN, and AC-FAIL errors.)
Clearing Alarms
To clear alarms, (1) press ALM CLR (SHIFT+SET); (2) set pin 5 of the J1 connector to LOW
(0 to 0.5 V) or shorted; or (3) turn off the slave units, turn off the master unit, fix the problem
that caused the alarm, turn on the slave units, and then turn on the master unit.
Connection (Master-Slave Parallel Operation)
You can connect up to four units, including the master unit.
Connecting the Signal Cables (Parallel Operation)
Use the J1 connector to make the connections for parallel operation. The cables that are required
to make the connection are not included. Refer to the About the J1 Connector section of
Chapter 3, External Control, for details about the connector.
If you are using the optional parallel operation signal cable (PC01, PC02, or PC03-RMX), the
connector is already assembled, so you can use it as is.
Figure 4-2. Connecting Two Slave Units
J1 J1
PRL OUT+
A COM
PRL COMP OUT
PRL on COM
PRL on
I SUM
8
9
7
19
18
13
J1
11
12
1
10
16
13
PRL IN+
PRL IN–
PRL COMP IN
A COM
OUT ON/OFF CONT
I SUM
PRL IN+
PRL IN–
PRL COMP IN
A COM
OUT ON/OFF CONT
I SUM
8
9
7
19
18
13
Master unit
Slave unit 1
Slave unit 2
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