User Manual

122
Operation Level Section 5-3
This parameter measures the heater current from the CT input used for
detecting heater burnout.
This parameter measures and displays the heater current value.
• Heater burnouts are not detected if the control output (heating) ON time is
190 ms or less.
• ffff is displayed when 55.0 A is exceeded.
• If a heater burnout is detected, the HA indicator will light, and the relative
setting level will flash on the No. 1 display.
■ Related Parameters
Heater burnout detection 1, Heater burnout detection 2 (adjustment level):
Page 134
Heater burnout (advanced function setting level): Page 163
Error Displays ct2: Page 206
This parameter measures the heater current from the CT input used for
detecting SSR short-circuits.
The heater current is measured and the leakage current 1 monitor is dis-
played.
• HS are not detected if the control output (heating) OFF time is 190 ms or
less.
• ffff is displayed when 55.0 A is exceeded.
• If an SSR short-circuit is detected, the HA indicator will light, and the rela-
tive setting level will flash on the No. 1 display.
■ Related Parameters
HS alarm 1, HS alarm 2 (adjustment level): Page 135
Failure detection (advanced function setting level): Page 174
Error Displays lcr1: Page 206
ct2 Heater Current 2 Value Monitor
Heater burnout and HS alarms must
be supported (two CTs).
Alarm 1 must be assigned.
The “heater burnout detection”
parameter must be set to ON.
Monitor range Unit
0.0 to 55.0 A
Function
Monitor
See
See
lcr1 Leakage Current 1 Monitor
Heater burnout and HS alarms must
be supported.
Alarm 1 must be assigned.
The “HS alarm use” parameter must
be set to ON.
Monitor range Unit
0.0 to 55.0 A
Function
Monitor
See
See