About Thyristor
These thyristor units are ideal for 3 phase configuration with neutral connection, normal (Relay S or Relay M) or variable resistive loads and transformer load types (PM3000-3PH). Relay S- 3PH = Simple on/off firing with a DC logic input, time proportioned burst firing with a DC linear input (basic firing selectable between 4,8 or 16 cycles) Relay M – 3PH = Time proportioned burst firing with a DC linear input (fully adjustable burst firing (3 to 255 cycles)), front panel display & keypad plus RS485 comms as standard. West Control Solutions presents a range of thyristor power controllers which have been designed to switch 3 legs of 3 phase loads.
Descriptions of Relay Powerstack 3PH Thyristor Power Controller
PMA3000 – 3PH = More complex load requirements that may need phase angle firing, delayed triggering, or features such as feedback, current limit etc.
Benefits & Features:
- Suitable to drive resistive, inductive, transformer with normal resistor
- Two legs switching three wires loads STAR or DELTA connection
- Frontal Key Pad standard to configure all the internal functions and
- parameters.
- Four Analog output configuirable
- Six Digital input
- Four realay output
- Universal Input signal with automatic zero/span calibration.
- Universal Firing modes, customer configurable via Key Pad or
- communication port as Burst Firing or Delayed Triggering
- Universal Feed back modes
- Soft Start can be used in addition to Burst Firing and Phase Angle.
- Unbalanced load and Heater Break Alarm.
- RS 485 port. Modbus protocol
- Comply with EMC
- IP20 Protection
Specification:
- Up to 2700A
- 3, 4 & 6 wire
- 24Vac to 690Vac Supply
- 4-20mA or 0-10V DC linear inputs
- 10K Pot or RS485 Comms input
- Burst Firing
- Single Cycle
- Soft Start + Burst Firing
- Delayed Triggering + Burst Firing
- Phase Angle
- Soft Start + Phase Angle
Source : www.west-cs.co.uk
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