INSTRUCTION MANUAL
HWS 3000G
TDK-Lambda
<Page>
31/49
6-4-3. Variable by communication
Constant current output value settings can be changed using Modbus RTU.
When communication is enabled, the set value by external application to the CC terminal will be
invalidated.
When communication is enabled, the output current setting value is maintained even if the input
voltage is cut off.
Refer to communication manual (A291-04-02_).
6-4-2. Variable by external power (CC terminal external current applied)
The constant current output value setting can be changed by applying an external current in the
range of 4-20mA to the CC terminal.
Connect the external power supply ground to the AG terminal.
Note that if no external current is applied to the CC terminal when the input is turned on, the power
output will be a constant voltage output.
When using multiple power supplies, daisy chain connection of CC terminals is not possible.
When connecting in a daisy chain, apply external voltage to the CC terminal (Section 6-4-1).
6-5. Over voltage protection (OVP)
OVP function is output shutdown method and manual reset type.
When OVP is activated, shut off the input, correct the cause of the overvoltage, and then turn it
back on after a few minutes.
Or, turn off the remote ON/OFF control signal, correct the cause of the overvoltage, and then turn it
back on.
Never apply voltage externally to the output terminal to avoid unit failure.
In case of inductive load, put protective diode in series to the output power line.
6-6. Over current protection (OCP)
Constant current limit with automatic recovery.
If the overcurrent protection operation continues for 30 seconds or more, the output will latch and
stop.
In addition, the output will latch and stop if a sudden output short circuit occurs.
When the latch stops, shut off the input, correct the cause of the overcurrent, and then turn it
back on after a few minutes.
Or, turn off the remote ON/OFF control signal, correct the cause of the overcurrent, and then turn it
back on.
Never operate the unit under over current or shorted conditions, which may lead unit damage.
TOPTOP
CC Current
0%
Output Current
4mA 20mA
Maximun
Output Current
CC Current
0%
Output Current
4mA 20mA
Maximun
Output Current
To Next Page
Loading...
