K8AK-TH
2
Specifications
Ratings
Characteristics
Item
Power supply voltage
100 to 240 VAC 50/60 Hz
24 VAC 50/60 Hz or 24 VDC
Allowable voltage range
85% to 110% of power supply voltage
Power consumption
5 VA max.
2 W max. (24 VDC), 4 VA max. (24 VAC)
Sensor inputs
K8AK-TH11S
Thermocouple: K, J, T, E; Platinum-resistance thermometer: Pt100, Pt1000
K8AK-TH12S
Thermocouple: K, J, T, E, B, R, S, PLII
Output relay
One SPDT relay (5 A at 250 VAC, resistive load)
External inputs
(for latch setting)
Contact input
ON: 1 k
Ω
max., OFF: 100 k
Ω
min.
Non-contact input
ON residual voltage: 1.5 V max., OFF leakage current: 0.1 mA max.
Leakage current: Approx. 10 mA
Setting method
Rotary switch setting (set of three switches)
Indicators
Power (PWR): Green LED, Relay output (ALM): Red LED
Other functions
Alarm Mode (upper limit/lower limit), non-fail safe/fail safe selection, output latch, setting protection, temperature
unit
°
C/
°
F
Ambient operating temperature
−
20 to 55
°
C (with no condensation or icing)
Ambient operating humidity
Relative humidity: 25% to 85%
Storage temperature
−
25 to 65
°
C (with no condensation or icing)
Measurement accuracy
K8AK-TH11S:
±
1% of the setting range or
±
4
°
C, whichever is larger
K8AK-TH12S:
±
1% of the setting range (
±
1% FS)
hysteresis width
2
°
C
Output relay
Rated load
Resistive load
5 A at 250 VAC
5 A at 30 VDC
Maximum switching capacity: 1,250 VA, 150 W
Minimum load: 5 VDC, 10 mA (reference values)
Mechanical life: 10 million operations min.
Electrical life:
5 A at 250 VAC or 30 VDC: 50,000 operations
3 A at 250 VAC/30 VDC: 100,000 operations
Sampling cycle
100 ms
Insulation resistance
20 M
Ω
(at 500 V) between charged terminals and exposed uncharged parts
20 M
Ω
(at 500 V) between any charged terminals (i.e., between input, output, and power supply terminals)
20 M
Ω
(at 500 V) between contacts (open)
Dielectric strength
2,300 VAC, 50/60 Hz for 1 min between terminals of different charge
Vibration resistance
Vibration of 10 to 55 Hz and acceleration of 50 m/s
2
for 5 min with 10 sweeps each in X, Y, and Z directions
Shock resistance
100 m/s
2
, 3 times each in 6 directions along 3 axes
Weight
Approx. 160 g
Degree of protection
IP20
Memory protection
Non-volatile memory (number of writes: 1 million)
Safety
Standards
Approved standards
UL 61010-1
Installation environment (pollution level 2, installation category II)
EMC
EN 61326-1
Application standards
UL 61010-1, Korean Radio Waves Act (Act 10564), CSA: C22.2 No.14, CCC: GB14048.5
Terminal screw tightening torque
0.49 to 0.59 N·m
Crimp terminals
Two solid wires of 2.5 mm
2
or two ferrules of 1.5 mm
2
with insulation sleeves can be tightened together.
Case color
N1.5
Case material
PC and ABS, UL 94 V-0
Mounting
Mounts to DIN Track.
Dimensions
22.5
×
100
×
90 mm (W
×
D
×
H)
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