K8AC-H
5
Characteristics
Note:
For phase control, the accuracy is the value when the control value of the power regulator is 100% (when the waveform of the heater current
is a sine wave). “rdg” is the error in the reading of the input current.
*1.
The Current Transformers are sold separately.
*2.
The values for measurement current apply when the K8AC-H is used in combination with a Current Transformer.
Heater control method Models for ON/OFF control (e.g., SSRs or contactors)
Models for phase control and cycle control
Item
Model
K8AC-H
@@@C@
-FLK
K8AC-H
@@
P
@
-FLK
Heater current
input
(at 10 to 30°C)
category II
Input range
K8AC-H
@
1
@@
: 0.200 to 2.200 A (Current Transformer: K8AC-CT20S (5.8 dia.), K8AC-CT20L (12 dia.)
*
1)
K8AC-H
@
2
@@
: 2.00 to 22.00 A (Current Transformer: K8AC-CT20S (5.8 dia.), K8AC-CT20L (12 dia.)
*
1)
K8AC-H
@
3
@@
: 20.0 to 200.0 A (Current Transformer: K8AC-CT200 (12 dia.), K8AC-CT200L (30 dia.)
*
1)
Measurement accuracy
±
3% rdg
±
10 digits max.
*
2
±
6% rdg
±
10 digits max. (at control level of 100%)
*
2
Voltage
fluctuation
compensation
category II
Input range
85 to 264 VAC
Measurement accuracy
±
3% rdg
±
10 digits max.
Gate input
Input range
0 to12 VDC or 0 to 24 VDC
ON: 9.6 VDC max., OFF: 1 VDC min.
4 to 20 mA DC
Display cycle
Selectable: Immediate, 0.2 s, 0.5 s, 1.0 s
Output ON-delay time
0.0 to 99.9 s (operating time)
Soft start time
0.0 to 99.9 s (used when using the soft start function of a Power Controller)
Output reset method
Automatic reset
Alarm hysteresis
1 to 999 digits
Output response time
500 ms max.
3.5 s max.
Insulation resistance
20 M
Ω
min.
Between terminals and case
Between power supply terminals/CT primary terminals and gate input terminals/communications terminals
Between power supply terminals/CT primary terminals and output terminals
Between gate input terminal/communications terminals and output terminals
Dielectric strength
2,000 V for 1 min
Between terminals and case
Between power supply terminals/CT primary terminals and gate input terminals/communications terminals
Between power supply terminals/CT primary terminals and output terminals
Between gate input terminal/communications terminals and output terminals
Noise immunity
Power supply terminals normal/common mode: ±1,500 V (startup 1-ns square-wave noise, pulse width: 1
μ
s/100 ns)
Vibration resistance
Vibration: 10 to 55 Hz, Acceleration: 50 m/s
2
for 5 min with 10 sweeps each in X, Y, and Z directions
Shock resistance
150 m/s
2
(100 m/s
2
for relay contacts) 3 times in 6 directions in X, Y, and Z directions
Maximum
allowable input
Current Transformer
primary current
K8AC-H
@
1
@@
: 4 A: 30 s, 12 A: 1 s
K8AC-H
@
2
@@
: 40 A: 30 s, 120 A: 1 s
K8AC-H
@
3
@@
: 400 A: 30 s, 1,200 A: 1 s
Gate signal: 4 to 20 mA
40 mA DC continuous
Voltage pulse gate in-
put
30 VDC continuous
Input imped-
ance
Gate signal: 4 to 20 m
50
Ω
max.
Voltage pulse gate in-
put
4 k
Ω
min.
Weight
Approx. 200 g
Memory protection
Non-volatile memory (number of writes: 100,000 operations)
Installation environment
Installation Category 2, Pollution Class 2
Approved standards
UL61010-1 and CAN/CSA C22.2 No.61010-1
EN 61010-1 (IEC 61010-1)
EMC
EMI:
EN61326-1 Industrial electromagnetic environment
Radiated Interference Electromagnetic Field Strength: EN55011 Group 1, class A
Noise Terminal Voltage:
EN55011 Group 1, class A
EMS:
EN61326-1 Industrial electromagnetic environment
ESD Immunity:
EN61000-4-2: 4 kV (contact discharge)
8 kV (air discharge)
Electromagnetic Immunity:
EN61000-4-3: 10 V/m 1 kHz sine wave amplitude modulation
(80 MHz to 1 GHz)
Fast Transient Burst Immunity:
EN61000-4-4: 2 kV (power line)
1 kV (I/O signal line)
Surge immunity:
EN61000-4-5: 1 kV (line to line, power line)
2 kV (line to ground, power line)
Conducted Noise Immunity
EN61000-4-6: 3 V (0.15 to 80 MHz)
Voltage Dip/Interrupting Immunity
EN61000-4-11:0.5 cycle, 0.180°,100% (rated voltage)
