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22. Common specifications
□
Type
: PAC18A
□
Control element configuration
: Thyristor x 2 inverse-parallel connection
□
Main/control power supply
: 100
–
240V AC, 7VA (main/control power supply used by same phase)
□ Power supply waveform
: Sine wave
□ Voltage fluctuati
on tolerance
: Max. ±10% of rated voltage
□ Ra
ted frequency
: 50/60Hz automatic recognition (operation range: 40
–
70Hz)
□ Current capacity
: Specify any of 6 types (20A, 30A, 45A, 60A, 80A, 100A)
□ Minimum load current
: 0.6A
□ Control output range
: Min. 0
–
97% (200V/50Hz power supply)
□
Applicable load
: Resistance load or inductive load (transformer primary control: phase control only)
□
Control type
: The following types of control can be set.
Px-: Phase control (selected when placing order), phase angle proportional output (P0-),
voltage proportional output (P1-),
current feedback (when optional current detection / alarm output function added) (P2-),
voltage square (electric power) proportional output (P3-)
C1-: Cycle calculation zero voltage switching control
□ Cooling
: Self cooling
□ P
rotection
: 1) Overcurrent protection function (current detection [optional]), output stops at approx. 130% of rated current
2) External rapid fuse (sold separately)
□ Control input
: Selection of any one of 3 types
(current 4
–
20mA DC [receiving impedance
100Ω] or voltage 1 –
5V, 0
–
10V
DC [input resistance 200kΩ])
Contact 2-position control (on/off control)
□
Standard functions
•
Output adjustment function
: Ramp setting (higher: 0.1
–
100%, lower: 0.0
–
99.9%)
Slow-up time / slow-down time (0.0 - 99.9 sec)
Input scaling (lower: 0.0
–
20.0%, lower: 80.0
–
100%)
Manual operation (0.0
–
100%)
•
External adjustment function
: Connecting external adjuster (sold separately) enables ramp setting (higher/lower) and
manual operation adjustment (max. 3)
□ Additional functions (options)
Output current detection / alarm output function: By built-in current sensor (CT)
•
Current limit function
: Phase control only supported
Limits load current (initial value: 100% of rated current)
0
–
100% of rated current set by external adjuster (current limiter) or 0
–
120% of rated current set by
front panel key operation
•
Overcurrent alarm
: Overcurrent protection function (output stops at approx. 130% of rated current)
•
Hardware error alarm
: Detects thyristor device error and outputs alarm.
•
Heater break alarm
: Detects heater break or deterioration and outputs alarm.
Heater break judgment 0
–
100%
*Heater break alarm judgment precision may be reduced in the case of variable resistance heaters
•
Alarm output
: 1 point, 1a contact, 240V AC 1A, insulated from system
Power failure, overcurrent, hardware error, heater break selection; alarm contact output;
redundant setting possible
•
Data communication function
Parameter setting function
(optional)
Reads/writes various types of parameters
•
Parameter setting function
: Communication protocol: Shimaden protocol
*No. of connections: 1 unit
*Connection: Mini jack-plug
*Communication speed: 9600 bps
*No. of bits: 7
*Parity: Even
*Stop bits: 1 (fixed)
Writes various setting parameters; reads control input value / output value / alarm
□ External control inp
ut function
: Manual operation
Standby (output OFF)
HB alarm output disable