Datasheet

K8AK-PW
5
Nomenclature
Front
●Indicators
* The input across L1 and L2 is used for the internal power supply.
Therefore, the power indicator will not be lit if there is no input
across L1 and L2.
●Setting Knobs
Note: 1. Use either a solid wire of 2.5 mm
2
maximum or a ferrule with
insulating sleeve for the terminal connection.
The length of the exposed current-carrying part inserted into
the terminal must be 8 mm or less to maintain dielectric
strength after connection.
Recommended ferrules
Phoenix Contact
• Al 1,5-8BK (for AWG16)
• Al 1-8RD (for AWG18)
• Al 0,75-8GY (for AWG18)
2. Screw tightening torque: 0.49 to 0.59 N·m
Power indicator
Relay status indicator
Overvoltage knob (OVER)
Undervoltage knob (UNDER)
Operating time knob (T)
Alarm indicator
Terminal block
(See notes 1 and 2.)
Terminal block
(See notes 1 and 2.)
Item Meaning
Power indicator
(PWR: Green)
Lit when power is being supplied*
Relay status indicator
(RY: Yellow)
Lit when relay is operating (normally lit).
Alarm
indicator
(ALM:
Red)
Overvoltage:
Red
Lit when there is an overvoltage.
The indicator flashes to indicate the error status
after the overvoltage has exceeded the set value
while the operating time is being clocked.
Undervoltage:
Red
Lit when there is an undervoltage or phase loss.
The indicator flashes to indicate the error status
after the undervoltage has exceeded the set value
while the operating time is being clocked.
Item Usage
Overvoltage knob (OVER) Can be set between −30% and 25% of the rated
input.
Undervoltage knob
(UNDER)
Can be set between −30% and 25% of the rated
input.
Operating time knob (T) Used to set the operating time to 0.1 to 30 s.
For 2.5 mm
2
or
smaller solid wires
For ferrules with
an insulation sleeve.
8 mm max. 8 mm max.