NAiS KT7, Инструкция по эксплуатации

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–300 to 900 –312 to 1000 –312 to 1000
DC current and voltage inputs
If the PV exceeds Indication range high limit value, the PV display blinks “ ”, and
if the PV exceeds the Indication range low limit value, the PV display blinks “ ”.
Indication ran : [Scaling low limit value – Scaling span x 1%] to [Scaling high limit value ge
+ Scaling span x 10%]
However, if the input value exceeds the range –1999 to 9999, the PV
display blinks “ ” or “ ”.
Control range : [Scaling low limit value – Scaling span x 1%] to [Scaling high limit value
u
+ Scaling span x 10%]
DC input burno t : When DC input is burnt out, PV display blinks “ ” for 4 to 20mA DC
and 1 to 5V DC inputs, and “ ” for 0 to 1V DC input.
For 0 to 20mA DC, 0 to 5V DC and 0 to 10V DC inputs, the PV display
indicates the corresponding value for which 0mA or 1V is inputted.
[Burnout]
When the thermocouple or RTD input is burnt out, OUT is turned off and PV display blinks
“ ” (for DC current output type, OUT low limit value).
Accessories included : Instruction manual 1 copy
When the option Heater burnout alarm is added: Wire harness 3m, 1 length
When the option Heater burnout alarm is added:
For rating 5A, 10A, 20A CT (AKT4815) 1 piece
For rating 50A CT (AKT4816) 1 piece
Accessories sold separately : For DC current input, 50 shunt resistor (AKT4811) 1 piece
10.2 Optional specifications
Heater burnout alarm
Watches the heater current with CT (Current transformer) and detects the burnout.
When this option is added, this option shares common output with Alarm output and Loop break alarm.
This option cannot be applied to DC current output type.
Rating
: 5A, 10A, 20A, 50A (Must be specified)
Setting range : 5A, 0.0 to 5.0A (Off when set to 0.0)
10A, 0.0 to 10.0A (Off when set to 0.0)
20A, 0.0 to 20.0A (Off when set to 0.0)
50A, 0.0 to 50.0A (Off when set to 0.0)
Setting accuracy : 5% of the rated value
Action : ON/OFF action
Output : Open collector
Control capacity, 24V DC 0.1A (Max.)
11. Troubleshooting
If any malfunctions occur, refer to the following items after checking the power supply to the controller.
11.1 Indication
Problem Presumed cause and solution
“ ” is blinking on the PV
display.
• Sensor (Thermocouple, RTD and DC voltage 0 to 1V DC
input) is burnt out.
Change the sensor for new one.
• Is the lead wire of the sensor (Thermocouple, RTD and DC
voltage 0 to 1V DC input ) securely connected?
Connect it to the input terminal properly.
The indication on the PV display
does not change. • Check if the input signal source for DC voltage (0 to 10V DC)
and DC current (0 to 20mA DC) is normal.
• Is the input signal wire for the DC current (0 to 20mA DC)
and DC voltage 0 to 10V DC securely connected to the input
terminal of this controller?
Connect the sensor lead wire securely to the input terminal
of this controller.
“ ” is blinking on the PV
display.
• Check if the input signal source for sensor (DC current
“4 to 20mA DC” and DC voltage “1 to 5V DC” input) is
normal.
• Is the input signal wire of DC current 4 to 20mA DC and
DC voltage1 to 5V DC securely connected to the terminal