EFDR2 Valve Driver, Fan Control, Multi-Input, (EFDR2)

The controller accepts up to three thermistor inputs for fan control along with a single switch input for manual activation of the fan reversal function. Controller input signals can be from a resistive temperature sensor, or analog switch inputs. The EFDR2 setup parameters are confi gured using a PC, or the Application Confi guration Programmer (ACP) serial interface, which allows for infrared programming and fi eld adjustment of the controller. This multi-input fan drive controller is suitable for a wide range of heavy duty industrial, marine, and mobile off-highway equipment applications requiring proportional fan control.

Product Features

• Complete Closed-Loop System Controller.• Settings by pre-written PC program.• CE Compliant for global application.• PC Data Logging feature for trend analysis.• Visible diagnostics with LED system ‘error’ blink code warning.• Alarm output for integrated system interface/shutdown options.• Fully protected against shorts, opens, and reverse connections.• Fan ‘Start-up Delay’ feature to prevent excessive cooling.• Flame-proof resin encapsulation.• Reversing can be initiated manually or automatically.• Various password levels ensure that characteristics cannot be changed without proper authority.• Suitable for on- or off-road use.• Industry-standard, sealed, Weather-pack or two-part polarized connectors. • Fan Noise Test feature for demonstrat-ing the proper noise level of a forward driven fan.

Product Ratings

POWER REQUIREMENTS:Power Required: 10 to 32 VDC
INPUT SUPPLY CURRENT:One: 200 mA Quiescent
All input and output characteristics are confi gurable with the Application Confi guration Programmer (ACP) software.
INPUTS — Three Command Inputs:Three discrete thermistor inputs: OHMS only (Max. Temp. = 50; Min. Temp. = 2M) Note: a thermistor input reaching ’Overtemp’ will result in ramping to full fan speed.
One Reversing Input: Digital: Active High
Dither Frequency: ~30 to 250Hz (menu selectable)
OUTPUTS — Two Control Outputs:Operating Current: Max. load for proportional valve
One, On/Off Sourcing Driver: (3A)
One, Proportional: (3.3A)
Proportional and Directional Coils: 8-14VDC: Use 12V coil
; 20-36VDC: Use 24V Coil

ENVIRONMENTAL RATINGS:Operating Temp. Range: –30°C to +75°C; Storage Temp. Range: –40°C to +85°C
Humidity Tolerance: 95-100% Non-Condensing
Moisture Leakage (sealant pressure tolerance): ±0.35 bar (5 psi) against water and water vapor; immersion resistant in 3 ft. (1 meter) of water; meets IP68 standards.
MATERIALS:Housing: Polycarbonate with fl ame resistant, two-part Epoxy Resin
3.452.3