91
Detecting Current Errors
Section 4-5
4-5
Detecting Current Errors
4-5-1
CT Assignment (TC2)
This parameter specifies which output's current is being measured.
Three-phase heater burnout detection can also be performed by assigning
two CTs to one output.
Note
This parameter can be set only when operation is stopped.
■
Examples:
Example 1 Heater burnout detection is performed on each channel's control
output (heating).
Example 2
Three-phase heater burnout detection is performed on channel
1's control output (heating).
4-5-2
Heater Burnout Alarm (HB Alarm)
A heater burnout is detected by measuring the heater current while the control
output (heating) is ON. For details, refer to the following table. (Heater burnout
detection cannot be used with the control output for cooling.)
Variable type
Parameter name
Setting range
Default
E4/A4
CT1 Assignment
(I/O) 0: Disabled
1: Control output 1
2: Control output 2
3: Control output 3
4: Control output 4
1
CT2 Assignment
(I/O)
2
Conditions for use
There must be a CT input.
OUT1
Channel 1 Control
Output (Heating)
CT1
CT1 Assignment = 1 (OUT1)
OUT2
Channel 2 Control
Output (Heating)
CT2
CT2 Assignment = 2 (OUT2)
Associated by the
CT1 Assignment.
Associated by the Control
Output 2 Assignment.
Associated by the
CT2 Assignment.
Associated by the Control
Output 1 Assignment.
OUT1
Channel 1 Control
Output (Heating)
CT1
CT1 Assignment = 1 (OUT1)
CT2
CT2 Assignment = 1 (OUT1)
Control output (heating)
Power to heater
HB Alarm output
ON
Yes (Normal) (See note 1.)
OFF
No (Heater burnout)
ON
Control output (heating)
ON
OFF
ON time
(See note 2.)
OFF time
Содержание EJ1 EtherCAT
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Страница 213: ...188 Detailed Description of Services Section 6 4 ...
Страница 227: ...202 Detailed Description of Services Section 7 5 ...
Страница 251: ...226 Determining the Error from the Current Situation for Heater Burnout Alarm Errors Section 8 8 ...
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