Special Purpose Valve Driver Cards
Hydraulic Fan System Controllers such as the HFS controls a hydraulically driven fan system. The HFS controller accepts three thermistor and two digital inputs and provides a PWM output to control the proportional valve of the fan drive. The HFS-2 adds the reverse or purge feature to the HFS. And the new HFS-J has the added feature of J1939 CANbus communication.
Hydraulic Generator Controller (HGC) is used to regulate the frequency output of an AC generator. By monitoring the output signal of a generator, the controller will drive a proportional valve’s solenoid to reach and maintain the set-point frequency. User settings and adjustments to the regulation process are made via a computer through the Serial Communications System.
Power-Line (PLD) - The universal single or dual coil PWM driver to stock for your open loop amplifier, electronic HP limiter and closed loop speed control applications.
Standard open loop proportional driver: Control
dual or single proportional coils on pumps, directional control valves
and other devices in an open loop (no feedback) configuration. Coil
current is controlled to match the input command signal. Minimum current
setting controls minimum speed or displacement and eliminates dead band.
Maximum current setting sets maximum speed or displacement. Auto
calibration provides maximum resolution from input device. Can be
operated with standard 10K potentiometer (included), or analog signal
such as from a joystick. Has fault monitoring for loss of command signal
safety.
RPM Regulator Anti-Stall/HP Limiting Controller: Adjusts its’
outputs as a function of the input RPM. Anti-stall, or HP load limiting,
progressively de-couples the load from the motor as RPM decreases to
avoid stalling the engine. This method is typically used in situations
where the operator controls the engine throttle and the load changes
independently. The Anti-Stall action is used to prevent a sudden
increase in load from causing the engine to stall before the operator
has a chance to increase the throttle or decrease the load, or to
automatically adjust the load without operator intervention.
Closed Loop Control: Single or dual coil PWM output that adjusts
to cause the RPM of a device to precisely match the commanded value. The
COMMAND input may be used to set the desired RPM value. Setting the MIN
RPM equal to the MAX RPM will cause a fixed RPM regulation set point,
but the COMMAND input may still be used to select direction of rotation.
The coil current can also be set to whatever value is required to keep
the RPM input at the set point value. A PID loop smoothly regulates the
RPM by adding to, or subtracting from, the load on the engine, or by
controlling the engine throttle.
The HAU series valve driver provides precise control of a single coil proportional valve and enables the user to add ramping and/or dither to minimize stiction and hysteresis of the valve. The HAD series valve driver is the same as the HAU, but drives a dual coil proportional valve. The LCU, a single coil proportional valve driver tailored for use on low current EDC valves such as Sauer-Danfoss™ 90 series.
The HDU single coil and HDD dual coil PWM valve driver has been designed specifically to be an Apitech/Parker VPL compatible Valve driver. Solid potted design assures reliable performance on harshest applications., multiple input types assure you meet application requirements and 33 Hz (standard) & 75 Hz available.
The HP proportional single coil or dual coil valve drivers use PWM to vary current to the valves. This driver uses a microprocessor to read user controls and regulate coil current. Ten turn potentiometers are provided to allow the user to adjust the maximum current(s), minimum current(s), ramp time(s), and where applicable, the crossover between coils, the dither amplitude, dither frequency. If preferred, all or some of these pots can be eliminated and these settings can be accomplished via the HCT Serial Communications System.
The PR operates as an Anti-Stall/HP Limiting Controller and adjusts its outputs as a function of the input RPM. Anti-stall, or HP load limiting, progressively de-couples the load from the motor as RPM decreases to avoid stalling the engine. The Anti-Stall action is used to prevent a sudden increase in load from causing the engine to stall before the operator has a chance to increase the throttle or decrease the load, or to automatically adjust the load without operator intervention. User settings and adjustments to the regulation process are made via a computer through the Serial Communications System.
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Special Purpose Valve Drivers |
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Model Number |
HFS-2, Fan Controller | ||||||||||
Function |
Microprocessor Controlled Proportional Valve Driver |
Open loop Proportional single coil or Dual Coil |
Analog Proportional Valve Driver |
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Comes with |
Users Manual |
Users Manual |
External Pot w/Knob |
External Pot w/Knob |
External Pot w/Knob |
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Used For |
Closed loop, Hydraulic Fan Systems |
Closed loop, Hydraulic Fan Systems, reversing |
Closed loop, Hydraulic Fan Systems, J1939 & reversing |
Closed loop Hydraulic Generator Control |
Open and Closed loop Control; HP Limiter, Speed Control |
Apitech/Parker VPL compatible valve driver |
Open loop |
Open loop |
Open loop EDC Valves |
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# Coils |
Single |
Single | Single |
Single |
Single (S/W Select) or Dual |
Single |
Dual |
Single |
Dual |
Single |
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Control Input |
3 Thermistor, 2 Digital |
3 Thermistor, 1 Digital |
2 Thermistor, 1 Digital, J1939 |
Frequency: 100 to 175 VAC (RMS), 50/60 Hz |
0V to +5V, 0V to +10V & Pulse |
-5V to +5V, 0V to 5V, 0V to 10V, 0 to 20 mA |
-5V to +5V, 0V to 5V, 0V to 10V, 4 to 20 mA |
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Coil Current |
0 to 3.3 A |
0 to 3.3 A | 0 to 3.3 A |
1 A @ 24 V |
0 to 3.0 Amps |
0 to 3.5 A |
31 mA to 5.0A |
31 mA to 250 mA |
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Voltage Range |
10.0 to 32.0 VDC |
10.0 to 32.0 VDC | 10.0 to 32.0 VDC |
8.5 to 32.0 VDC |
8.5 to 32 VDC |
11.0 to 30.0 VDC |
11.0 to 30.0 VDC |
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Ramp |
Y |
Y |
Y |
Y |
Y |
Y |
Y |
Y |
Y |
Y |
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Dither |
Y |
Y |
Y |
Y |
Y |
- |
- |
Y |
Y |
Y |
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Waterproof Pot |
- |
- | - |
- |
Opt |
Opt |
Opt |
Opt |
Opt |
Opt |
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Weatherpak Connector |
12-Pin Deutsch |
6 & 8-P Weidmuller
or optional WeatherPack |
12-Pin Deutsch |
999-10094, 2-Pin Shroud |
999-10095, 2-Pin Tower |
Opt |
Opt |
Opt |
Opt |
Opt |
Opt |
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Customer Programmable |
Y |
Y |
Y |
Y |
Y |
- |
- |
- |
- |
- |
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Diagnostic onboard LED’s |
Y |
Y |
Y |
Y |
Y |
Y |
Y |
Y |
Y |
Y |
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Mobile Equipment |
Y |
Y |
Y |
Y |
Y |
Y |
Y |
Y |
Y |
Y |
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Opto-2000 |
Y |
RS232 | Y |
Y |
Y |
- |
- |
- |
- |
- |
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Opto-2000 Software |
023-00182 |
023-00196 | 023-00218 |
023-00198 |
023-00206 |
- |
- |
- |
- |
- |
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Reference output |
- |
- | - |
- |
4.5 V @ 25 mW |
9 V @ 100 mW |
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PWM Output |
1 |
1 | 1 |
- |
1 or 2 |
1 |
2 |
1 |
2 |
1 |
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CE Compliance |
Pending | Pending | Pending | Pending |
Pending |
N |
N |
N |
N |
N |
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Sealing |
Designed to meet IP68 |
Designed to meet IP68 * | Designed to meet IP68 |
Designed to meet IP65 |
Designed to meet IP65 |
Designed to meet IP65 |
Designed to meet IP65 |
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Temperature, Operating |
-40 to +75 Deg C |
-40 to +75 Deg C |
-40 to +75 Deg C |
-40 to +75 Deg C |
-40 to +75 Deg C |
-20 to +60 Deg C |
-20 to +60 Deg C |
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Physical |
94 L x 94 W x 13 H mm |
94 L x 94 W x 13 H mm |
94 L x 94 W x 13 H mm |
94 L x 94 W x 13 H mm |
94 L x 94 W x 13 H mm |
70 L x 70 W x 10 H mm |
94 L x 94 W x 10 H mm |
70 L x 70 W x 10 H mm |
94 L x 94 W x 10 H mm |
70 L x 70 W x 10 H mm |
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* derated for connectors