K8AK-TH
4
Connections
Wiring Diagrams
Timing Charts
Power supply
voltage*
1
Power supply
voltage*
1
Power supply
Relay output
Power supply
Relay output
External input
(LATCH_RST)
*
2
Sensor input
External input
(LATCH_RST)
*
2
Sensor input
Not used.
Not used.
Not used.
Thermocouple
Thermocouple
Pt resistance thermometer input
1
+
−
2
3
4
5
6
14 11 12
A1
A2
1
+
−
2
3
4
5
6
14 11 12
A1
A2
A
B
B
Not used.
Not used.
K8AK-TH11S
K8AK-TH12S
*1 The input power supply depends on the
model: 100 to 240 VAC or 24 VAC/VDC (no
polarity)
*2
Wiring of the external input terminals is as shown
below.
Relay output (normally closed) (11) to (14)
Relay output (normally open) (11) to (14)
Temperature alarm or other error
Power supply
Relay output (latched) (11) to (14)
LATCH_RST or external inputs (4) to (5)
Temperature alarm or other error
Power supply
PWR indicator
SV Protect Mode
Power supply
ALM indicator
Temperature alarm
Power supply
Other error
Temperature alarm lower limit (11) to (14)
Temperature alarm upper limit (11) to (14)
Temperature setting
0.02 s
2°C (°F)
2°C (°F)
Flashing
Flashing
Temperature Alarm: Hysteresis: 2°C/°F
Changing between Normally Open and Normally Closed
Latched Operation: Relay outputs remain latched even after the alarm
or error is reset.
Operation of Indicators
* To enter SV Protect Mode or reset the latch, turn ON the LATCH_RST signal or
external input for at least 5 seconds.
* Other errors: sensor open circuit error, sensor input error, temperature setting
error, and memory error.
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