Shimaden PAC18 Series Instruction Manual Download Page 27

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20. Common specifications

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Type :

PAC18

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Control element configuration

: Thyristor x 2 inverse-parallel connection

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Main/control power supply

: 100 – 240V AC, 5VA (main/control power supply used by same phase)

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Voltage fluctuation tolerance

: Max. ±10% of rated voltage

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Rated frequency

: 45 – 65Hz

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Rated current

: Any one of 6 types (20, 30, 45, 60, 80, 100A)

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Minimum load current

0.6A

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Control output range

: 0 – 98% or more

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Applicable load

: Resistance load or inductive load (transformer primary control: phase control or complex control)

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Control type

: Phase control, cycle calculation zero voltage switching control, complex control (specify when ordering)
(No output feedback function)

P: Phase control (specify when ordering); phase angle proportional output (P0-),

voltage proportional output (P1-) or voltage square proportion Output (P3-)

C1-: Cycle calculation zero voltage switching control

X1-:

Complex control (phase control when output increases from 0%, followed by cycle calculation zero voltage switching control)

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Cooling

: Self cooling

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Protection :

1) Electronic overcurrent gate cutoff circuit (optional); alarm output when operating, detection by current sensor (CT)

2) Rapid fuse (sold separately)
3) Hardware error detection (optional); detects short circuit or thyristor shorting when output is 0%

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Control input

: Selection of any one of 3 types (current 4 – 20mA DC [receiving impedance 100

Ω

] or voltage 1 – 5V,

0 – 10V DC [input resistance 200k

Ω

]) Contact 2-position control (on/off control)

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Standard functions

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External adjuster

: Can be allocated to ramp, current limiter, manual operation and up to 3 external adjusters (sold separately)

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Variation limit

: 0.0 – 99.9 sec. variable setting (set by front surface key switch)

(slow-up, slow-down) Time required to reach 0 – 100% output time, initial value:1.0 sec.

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Additional functions (optional)

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Output current detection function (built-in current sensor CT)

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Current limit function

: Phase control only supported

Using pure metal load, etc., inrush current limitation, response time 0.1 sec. or less (initial value 100% or 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

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Overcurrent error alarm : Electronic overcurrent gate cutoff circuit, outputs alarm when it detects that output current value is in excess of

130% of the rating

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Hardware error alarm

: Alarm is output when thyristor error (thyristor device is shorted and current flows even though output is 0%) is detected.

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Heater break alarm

: Heater break is detected and alarm is output.

Heater break judgment 0 – 100% setting
[caution]: Variable resistance heaters can be controlled applicable load, but Heater break alarm function can
not be detected rightly in some cases because the change of resistance value is too large.

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Alarm output

: One point a-contact 240V AC, 1A (insulated from system circuit)

Power failure, overcurrent error, hardware error, heater break selection
alarm contact output; redundant selection possible

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Parameter setting function

: Separately sold data communication adapter can be connected.

you can connect to a computer via a separately sold data communication adapter and display various settings,
control input values, output values and trend graph.

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Communication : RS-485 specs., insulated from control input and system

Communication protocol: MODBUS protocol (RTU)

Communication speed: 19200/ 9600bps

Parity: Selection of NON / EVEN / ODD

Stop bits: 1/2 selection

Power on/off, output control, ramp setting

Operation on/off, control input, operation amount, load current, alarm status can be obtained

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Separately sold goods

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Data communication adapter