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FUNCTION (40 to 300A Models)
Safety
Detection of short circuit or opening of inputs, absence of input feed, LBA
alarm, HB alarm
Selection of °C/°F
Configurable
Linear scale range
-1999…9999
Control Actions
1 control loops:
Double action (heat/cool) PID, on-off
Self-tuning at start, continuous Autotuning, one-shot Autotuning
PID parameters: pb-dt-it
0,0...999,9 % – 0,00...99,99 min – 0,00...99,99 min
Action – control outputs
heat/cool – ON/OFF, PWM, GTT
Max limit heat/cool power
0,0…100,0 %
Fault power setting
-100,0…100,0 %
Shutdown function
Maintains sampling of PV; maintains control off
Configurable alarms
The alarm is assignable to an output and configurable as: maximum, minimum,
symmetrical, absolute/deviation, LBA, HB
Alarm Masking
Exclusion at power-on, latch, reset from digital input
Energy Calculation
Totalizer of energy value supplied to load with local display by terminal and
remote acquisition from fieldbus. Counters can be reset.
OPTIONS (40 to 300A Models)
Options
- Timed Soft-Start firing ramp, with or without peak current control
- Soft-Start firing ramp, specific for infrared lamps
- Timed shut-off ramp
- Limitation of RMS current in load
- 0-90° Delay-Triggering for firing inductive loads in ZC and BF mode
Diagnostics
- SCR in short circuit (presence of current with OFF control)
- No linear voltage
- Fan supply power missing
- No current due to open SCR/interrupted load
• Overheat alarm (of power modules, of clamps for power cables, of fuse)
Current reading
• Calibration procedure using automatic threshold HB alarm from the value of
the load current
• Alarm load short circuit or overload
Voltage reading
• Input phase unbalanced
• Wrong phase rotation in three-phase load configuration
Type of connection and load
Selection via dip-switches
- with one Master unit:
1 single-phase load
- with one Master units and one Expansion:
2 single-phase loads
in ZC and BF trigger mode only:
1 phase load closed delta controlled on two phases
1 phase load star without neutral controlled on two phases
- with one Master unit and two Expansions:
3 single-phase loads
3 independent single-phase loads open delta
1 phase load open delta
1 phase load closed delta
1 phase load star with neutral
1 phase load star without neutral
Содержание CFW
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