User Manual

121
Operation Level Section 5-3
This parameter monitors the set point during SP ramp operation.
A ramp is used to restrict the change width of the set point as a rate of
change.
This parameter is displayed when a set value is input for the “SP ramp set
value” (adjustment level).
When not in ramp operation, the set point will be the same as the one dis-
played for the “process value/set point” parameter.
■ Related Parameters
Process value/set point (operation level): Page 120
SP ramp set value (adjustment level): Page 143
Set point upper limit, Set point lower limit (initial setting level): Page 149
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 ct1: Page 206
sp-m Set Point During SP Ramp
The “SP ramp set value” parameter
must not be set to OFF.
The “ST” parameter must be set to
OFF.
Monitor range Unit
SP: SP lower limit to SP upper limit EU
Function
Monitor
See
See
ct1 Heater Current 1 Value Monitor
Heater burnout and HS alarms must
be supported.
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