Ventilation Controls for PSC and EC Motors

 870-10D ECM Head Pressure Control

If you want low ambient head strain manipulate on your A/C Condenser with an ECM motor, Hoffman Controls has the answer with our Model 870-10D Universal Fan Cycle Switch. Installation is straightforward and there's no want to penetrate the device with our temperature feel technology. This manipulate will range the obligation cycle of any current discrete or variable velocity ECM condenser fan cars to optimize head strain for each environmental condition.

The 880-20 ECM Head Pressure Control

 This digital head strain manipulate modulates condenser fan motor velocity thereby various the air quantity thru the condenser. The manipulate video display units the top strain via way of means of sensing the sub-cooled liquid line temperature.

There are  temperature inputs and 3 outputs (PWM, zero-10 VDC and 10-zero VDC) to manipulate the ECM or VFD variable velocity fan motor.

Two temperature parameters may be set to optimize the variety of fan speeds in order that because the ambient temperature changes, the fan velocity is various so one can keep the appropriate head strain.

This improves device overall performance even as saving power and casting off compressor slugging. The non-invasive temperature sensors require no device penetration.

If you want to manipulate a couple of cars, or have extra or different enter sensors, or have Modbus verbal exchange, we have got were given a product for that also.

759-ECM Refrigeration Evaporator Fan Efficiency Controller

For walk-in and reach-in coolers and freezers

Continuously variable evaporator fan velocity automated manipulate

Maximum efficiency, decreased compressor run time, advanced product shelf life

PWM and DC outputs

Multi-Motor Capable

Compatible with all variable velocity EC cars (ECM)

This is a retrofit. Replace your fan (if needed) and the fan manipulate enter with the 759 and store power. All important gadgets furnished via way of means of Hoffman Control.

 890-DSQ Universal Sequencer and Modulator

• Operate as much as 12 levels of fans, compressors, or heaters
• Continuous output version feasible with one variable unit brought to the mix
• MODBUS RTU verbal exchange with constructing automation systems
• Up to 6 sensors for tracking inputs with combining options
• Menu device permits clean set factor adjustment such as hysteresis
• Secondary set of set factors may be used primarily based totally on an enter touch closure
• 32 individual LCD show
• 12 relay outputs plus modulating output (PWM and zero-10 VDC or 10-zero VDC)
• Inputs may be temperature, strain, zero-10 VDC, or touch closures

 

610 Motor Current and Temperature Protection

Protects unmarried segment and three segment cars from contemporary draw problems

Uses contemporary transformers to digitally feel currents

Two temperature sensors also can be used for thermal tracking

MODBUS RTU verbal exchange with constructing automation systems

Trip factor may be set primarily based totally on contemporary flow, contemporary imbalance, temperature

Current journey timing is primarily based totally on power into device after journey set factor is reached

Menu device permits clean adjustment of parameters and set factors

32 individual LCD show

Selectable range of journeys with automated reset

Alarm signal

1. Can study and write all values over MODBUS, such as guide reset
2. 763-ECM EC Motor Variable Speed Control
3. Control the rate of an ECM motor domestically or remotely
4. MODBUS RTU verbal exchange with constructing automation systems
5. Closed-loop manipulate mode will keep motor velocity unbiased of loading
6. LED show of motor rpm
7. PWM and DC outputs plus GO Signal