Proportional controllers provide precise power control

The use of an auxiliary DC power supply allows to have good precision and low noise sensitivity over the full control voltage range.

The output of the SSR can be controlled by two different methods: phase angle control, which works by varying the firing angle of the SCRs, and burst fire control (with distributive zero cross), which is a time proportioning method in which full AC cycles are conducted at the output.

The PMP series relays are fully configurable. They come with a parameter selector switch which allows to select both the control method and the control input type. The operation status of the unit is conveniently displayed by the built-in LED.

PMP series proportional SSRs can be used in a range of applications that require proportional power control, and they are a suitable solution for lamp dimming and resistive heating control.

Key features:

• Output ratings of 25, 50 and 90A
• Available in three operating voltage ranges: 90-280, 345-530 and 420-660VAC
• Selectable operation mode: phase angle or burst fire control
• Selectable Control Input: 0-5VDC, 0-10VDC, 4-20mA
• 50/60Hz adaptive operational frequency function
• 4-20mA input does not require an auxiliary power supply
• LED multifunction status indicator
• Contactor configuration with 'elevator' screw terminals
• Optional overvoltage protection (built-in TVS diode)

Crydom’s PMP Series relays are C-UL-US recognised and CE compliant to the low voltage directive as well as the RoHS directive.