16
[Burnout]
When the thermocouple or RTD input is burnt out, OUT1 and OUT2 are turned off (for DC current
output type, OUT1 low limit value, OUT2 low limit value) and PV display flashes “ ”.
[Self-diagnosis]
The CPU is monitored by a watchdog timer, and if an abnormal status is found on the CPU, the
controller is switched to warm-up status.
[Automatic cold junction temperature compensation] (Only thermocouple input type)
This detects the temperature at the connecting terminal between the thermocouple and the instrument,
and always maintains it in the same status as if the reference junction is located at 0 (32 ).
[Power failure countermeasure]
The setting data is backed up in the non-volatile IC memory.
[Warm-up indication]
After the power supply to the instrument is turned on, the sensor input character and temperature
unit are indicated on the PV display and input range high limit value is indicated on the SV display
for 3 seconds.
For DC current and voltage input, the scaling high limit value is indicated.
Accessories: Screw type mounting brackets: 1 set
Instruction manual: 1 copy
CT (Current transformer): CTL-6S 1 piece (for rated current 5A, 10A, 20A)
CTL-12-S36-10L1U 1 piece (for rated current 50A)
9.2 Optional specifications
Alarm 2 (A2) (Option code: A2)
[A2], [W] and [LA] options utilize common output terminals.
Action : ON/OFF action
Hysteresis : 0.1 to 100.0 ( ), or 1 to 1000
Output : Relay contact 1a
Control capacity, 3A 250V AC (Resistive load)
Electrical life, 100,000 times
Loop break alarm (Option code: LA)
When MV (manipulated variable) is maximum or minimum and when the PV does not change as much as
the preset span within the Loop break alarm assessment time, the alarm is activated.
This also detects the breaking status on the loop such as heater burnout, sensor burnout or actuator trouble.
[LA], [A2] and [W] options utilize common output terminals.
Setting range : Loop break alarm time, 0 to 200minutes
Loop break alarm span, 0 to 150 ( ), 0.0 to 150.0 ( ), 0 to 1500
Output : Relay contact 1a
Control capacity, 3A 250V AC (Resistive load)
Electrical life, 100,000 times
Heater burnout alarm (including sensor burnout alarm) (Option code: W)
Monitors heater current with CT (current transformer), and detects burnout.
This alarm is also activated when indication is overscale and underscale.
[W], [A2] and [LA] options utilize common output terminals.
This option cannot be applied to DC current output type.
Rated current : 5A [W(5A)], 10A [W(10A)], 20A [W(20A)], 50A [W(50A)] (Must be specified)
Setting range : 5A [W(5A)] : 0.0 to 5.0A (Off when set to 0.0)
10A [W(10A)] : 0.0 to 10.0A (Off when set to 0.0)
20A [W(20A)] : 0.0 to 20.0A (Off when set to 0.0)
50A [W(50A)] : 0.0 to 50.0A (Off when set to 0.0)
Setting accuracy : Within 5% of the rated value
Action : ON/OFF action
Output : Relay contact, 1a
Control capacity, 3A 250V AC (resistive load)
Electrical life, 100,000 times
Heating/Cooling control (Option code: DT)
The specification of Heating side is the same as that of OUT1.
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
OUT2 high limit setting : 0 to 100%
OUT2 low limit setting : 0 to 100%
Overlap band/Dead band setting range:
Thermocouple, RTD input: –100.0 to 100.0 ( )
DC current, DC voltage input: –1000 to 1000 (The placement of the decimal point follows the selection)
Output: Non-contact relay output, 0.3A 250V AC
Cooling action mode selection function:
One cooling action can be selected from Air cooling (linear characteristic), Oil cooling (1.5th power of
the linear characteristic) and Water cooling (2nd power of the linear characteristic) by keypad.
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