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K8DT-PM
Nomenclature
Front
Terminal block
(See Note.)
Power indicator
Output status indicator
Alarm indicator
Terminal block
(See Note.)
Note: Use solid wires, stranded wires, or ferrules to connect to the
terminals.
To maintain the withstand voltage after connecting the
terminals, insert 8 mm of exposed conductor into the terminal.
Solid Wire
Stranded Wires
8 mm
Operation Methods
Connections
Input
Wire the input to the L1, L2, and L3 terminals (3-phase, 3-wire).
Make sure the phase sequence is wired correctly. The Unit will not operate normally if the phase
sequence is incorrect.
Outputs
For a relay output, the SPDT contacts are output on terminals 11, 12, and 14. For a transistor
output, the NPN output is on terminals 11 and 14.
Do not use the transistor output for control applications. It is designed only to output a signal when
an error is detected.
4
Overvoltage knob
(OVER)
Undervoltage knob
(UNDR)
Operating time knob (T)
Ferrules
8 mm
8 mm
Indicators
Item
Power indicator
Lit when power is being supplied.*
(PWR: Green)
Output status indicator
Lights for output (lit for normal operation)
(OUT: Yellow)
• Lights for overvoltage error.
When the input exceeds the overvoltage
OVER: Red
value, the indicator flashes for the operating
time to indicate the error status.
• Flashes for phase loss.
Alarm
• Lights for undervoltage error.
indicator
When the input exceeds the undervoltage
value, the indicator flashes for the operating
UNDR: Red
time to indicate the error status.
• Flashes for phase loss.
• Flashes for reversed phase error.
* This indicator uses the input across L1 and L2 as the internal power
supply. It will not light unless there is an input across L1 and L2.
Setting Knobs
Item
Used to set from -30% to 30% of the rated
Overvoltage knob (OVER)
input.
Undervoltage knob
Used to set from -30% to 30% of the rated
(UNDR)
input.
Operating time knob (T)
Used to set the operating time to 0.1 to 30 s.
Meaning
Description
L1
L2
L3
Voltage input
L1
L2
L3
14
Contact output
12
or
Transistor output
Load
14
11
11
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