3 Normal Operation
3-5
3-5 Switching between Local Mode and Remote Mode
The method of switching between the local and remote modes can be selected out of the following
3-5-1 and 3-5-2.
In either way, the remote programming indication EXT on the front panel is displayed.
Note for remote function
Note the following points when remote functions are used.
・
Make the wiring for remote function as short as possible
・
Try to avoid existence of high frequency power supply nearby wiring of remote function.
(Especially important in case of high voltage floating)
※ Although the unit integrates full protection circuits, there might be the possibility
of failure when operated with excessive voltage or energy.
3-5-1 Setting Current, Voltage and OVP(No.1)
The current, voltage and OVP are all set in the remote mode (set externally).
There shall be no output without inputting Voltage program and Current program.
When OVP voltage is not programmed, output is shut off and FLT shall light on.
TTL LOW = OUTPUT : remote mode
TTL HIGH = OUTPUT : local mode
Or
External relay CLOSED = OUTPUT : remote mode
External relay OPEN = OUTPUT : local mode
TB1
TTL signal
11
10
23
22
21
20
-
+
External relay
5kΩ
100Ω
9
8
7
-S
(Common)
-S
(Common)
Power supply unit
internal circuit
User connection
CAUTION