Curtis 1352 handleiding
Handleiding
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1 — OVERVIEW
Curtis 1352 eXm Manual, June 2021
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• 3 virtual digital inputs with programmable thresholds (using the analog inputs)
• 2 analog inputs are selectable for voltage input or resistive sensors
• Built-in coil yback diodes
• Soware and hardware watchdog circuits ensure proper soware operation
• CANopen interface
• Controlled by a xed PDO map and programmable over SDOs
• IP65-rated enclosure allows the eXm to be mounted in multiple orientations, and protects it
even in harsh environments
• Status LEDs provide external status of module.
DESCRIPTIONS OF KEY FEATURES
Versatile I/O
High frequency PWM outputs
Six identical FET drivers are designed to sink up to 3 amps through a resistive or inductive load.
High frequency PWM (>16kHz) provides smooth current to the load. Internal yback diodes to B+
are incorporated to reduce voltage spikes caused when pulsing coils.
Constant current and constant voltage output modes
e eXm’s DSP runs at 32 MIPS (Million Instructions per Second), allowing the eXm to run six
fast PI (Proportional/Integral) closed loop controllers. e eXm’s PI controllers provide an accurate
constant current to the load, which is important for precise control of proportional valves.
Each output can also be programmed for constant voltage mode. In this mode, the battery voltage is
monitored and the PWM command is corrected to provide a constant average voltage, compensating
for uctuating battery levels and droops.
Each output can also be set to provide a directly commanded PWM% or turned o to be used as
an input.
Programmable dither for hydraulic valves
The eXm can add a programmable level of dither to the PWM output. This keeps the seals of a
proportional valve oiled, allowing the valve to move freely for accurate PV control. Dither is only active
on drivers in Constant Current mode.
Output as an Active High digital input
Each output can be also be used as a digital input. Each input is digitally ltered to eliminate switch
“bounce” or noise in the signal. e eXm has internal resistor pull-downs to B– to provide active
high to B+ inputs (standard Curtis input format). e inputs utilize Schmidt Trigger logic to provide
signal hysteresis, further improving noise immunity and reducing faulty readings.
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Productinformatie
Merk | Curtis |
Model | 1352 |
Categorie | Niet gecategoriseerd |
Taal | Nederlands |
Grootte | 5176 MB |