Temperature Monitoring Relay
K8AB-TH
5
Nomenclature
■
Front Operations
Indicators
Operation Switches
Note: 1.
The ALM indicator will flash if any of the following conditions occur.
(1) The temperature input value exceeds the specified range.
(2) The temperature set value exceeds the specified range.
(3) There is an error in the internal circuits.
2.
The SV protection will function when the latch reset button is pressed
for at least 5 s.
The power indicator will flash when the SV is protected. To release
the protection, press the latch reset button again for at least 5 s.
Alarm Setting Rotary Switch
Turn the arrow in the direction of the number to set.
■
Function Setting DIP Switch
TH11
Output latch
reset button
Alarm setting
rotary switch
Power indicator (PWR): Green
Alarm indicator (ALM): Red
Item
Usage
Power indicator
(PWR)
Lit: Power supply is ON.
Flashing: SV protected.
Alarm indicator
(ALM)
Lit: Relay is operating.
Flashing: Sensor is disconnected or there is a
Temperature Monitoring Relay error. (See note 1.).
Item
Usage
Output latch reset
button
The output latch can be reset by pressing this button.
(Enabled when latch is enabled.) (See note 2.)
Alarm setting
rotary switch
Set each digit of the alarm set temperature.
K8AB-TH11S: x1, x10, x100 digits
K8AB-TH12S: x10, x100, x1000 digits
0
1
23
4
5
6
7 8 9
This DIP switch is provided on the side
of the Temperature Monitoring Relay.
(All switches are OFF for the default
settings.)
K8AB-TH11S
* The type will be Pt100 for any of these settings.
K8AB-TH12S
Function
Default
SW1
Alarm mode
OFF
Upper-limit alarm
OFF
ON
Lower-limit alarm
SW2
Output latch selector
OFF
Enabled
OFF
ON
Disabled
SW3
Operation selector: Non-fail safe/
fail safe
OFF
Non-fail safe
OFF
ON
Fail safe
SW4
Temperature unit
OFF
°
C
OFF
ON
°
F
SW5
Input type selector
Refer to the following table.
OFF
SW6
OFF
SW7
OFF
SW8
Not used.
---
OFF
Sensor type
K
J
T
E
Pt100*
Pt100*
Pt100*
Pt100*
SW5
OFF
OFF
OFF
OFF
ON
ON
ON
ON
SW6
OFF
OFF
ON
ON
OFF
OFF
ON
ON
SW7
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Sensor type
K
J
T
E
B
R
S
PLII
SW5
OFF
OFF
OFF
OFF
ON
ON
ON
ON
SW6
OFF
OFF
ON
ON
OFF
OFF
ON
ON
SW7
OFF
ON
OFF
ON
OFF
ON
OFF
ON
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
OFF
ON
