K8AK-TH
5
Nomenclature
Front Operations
●
Error (ALM indicator: Flashing)
One of the following items 1 to 3 has occurred.
1. The sensor circuit is disconnected or the
temperature setting is out of the specified range.
2. The temperature setting is out of the specified range.
3. There is a problem in the internal circuits.
Corrections
1. Disable SV Protect Mode.
2. Disable the latch.
3. Check for incorrect wiring, circuit disconnections,
short circuits, and whether the input type and
temperature settings are correct.
4. If the wiring and settings are correct, reset the power
supply.
If the Unit resumes normal operation, the problem
may have been caused by noise.
If the Unit does not resume normal operation, it must
be replaced.
* The non-volatile memory stores the event when a latched output is
disabled, or the SV Protect Mode is enabled or disabled. An error
may occur if the data is updated more than one million times.
* If you press and hold the LATCH_RST button for 5 seconds or
longer, the SV Protect Mode will go into effect.
When SV Protect Mode is enabled, the PWR indicator flashes.
To disable the SV Protect Mode, press and hold the LATCH_RST
Button for at least 5 seconds.
●
Alarm Setting Rotary Switch
Point the arrow to the required number.
Note: 1.
Use solid-core wires of 2.5-mm
2
max. or ferrules with an
insulation sleeve to wire to this terminal.
To ensure the dielectric strength of the connection, do not
expose more than 8 mm of wire for insertion into the
terminal.
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 supply
Relay output
ALM indicator (Red)
R_SW3
External input
(LATCH_RST)
Sensor input
PWR Indicator (Green)
LATCH_RST
button*
R_SW2
R_SW1
Temperature unit (Black
out the unnecessary
label: °C or °F)
8 mm max.
8 mm max.
For a solid wire
of 2.5-mm
2
of max.
For ferrules with
an insulation sleeve.
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