User manual

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Accessories included: Instruction manual 1 copy
Screw type mounting brackets 1 set
CT (current transformer)
For rating 5A, 10A, 20A : AKT4815 1 piece
For rating 50A : AKT4816 1 piece
Accessories sold separately:
Terminal cover (AKT9801) 1 piece
50 shunt resistor (AKT4810) 1 piece
9.2 Optional specifications
Alarm 2 (A2)
When A2 action is set as Energized, the alarm action point is set by deviation from
OUT1 SV (except Process alarm).
When the input is out of the range, the output turns ON or OFF (in the case of
High/Low limit range alarm).
When the alarm action is set as Deenergized, the output acts conversely.
When A2 option is added, one more option Heater burnout alarm or Heating/Cooling
control can be added.
Setting accuracy: The same as the Indicating accuracy
Action : ON/OFF action
Hysteresis : Thermocouple, RTD input, 0.1 to 100.0 ( )
DC current, voltage input, 1 to 1000
(The placement of the decimal point follows the selection)
Output : Relay contact, 1a
Control capacity, 3A 250V AC (resistive load)
Electrical life, 100,000 cycles
HB (Heater burnout alarm)
Watches the heater current with CT (current transformer), and detects the heater
burnout.
Heater burnout alarm is activated when sensor is burnt out or when indication is
overscale or underscale. (To detect Heater burnout, a CT for 50A can also be used for
5A, 10A and 20A ratings, however, this is not suitable for small ampere ratings due to a
low degree of accuracy. For a 20A rating or less, use a CT designated for 20A.)
• When the Heater burnout alarm option is applied, one more option A2 output or
Heating/Cooling control can be added.
• This option cannot be applied to DC current output type.
Heater rated current: 5A, 10A, 20A, 50A, Must be specified
Setting accuracy : Within 5% of heater rated current
Action : ON/OFF action
Output : Relay contact, 1a
Control capacity, 3A 250V AC (resistive load)
Electrical life, 100,000 cycles
Heating/Cooling control
When the Heating/Cooling control option is added, one more option A2 output or
Heater burnout alarm can be added.
OUT2 proportional band : 0.0 to 10.0 times OUT1 proportional band
(ON/OFF action when set to 0.0)
OUT2 integral time : The same as that of OUT1
OUT2 derivative time : The same as that of OUT1
OUT2 proportional cycle : 1 to 120 seconds
Overlap band/Dead band:
Thermocouple, RTD input: –100.0 to 100.0 ( )
DC current, voltage input: –1000 to 1000 (The placement of the decimal
point follows the selection)