7CH4E200 MICROPROCESSOR CONTROLLER FOR SEPARATELY EXCITED MOTORS

Product catalog summary

Introduction
The 7CH4E200 is a microprocessor-based controller designed for separately excited motors used in traction applications, powered by a 24/36V battery. It features digital control for speed, current regulation, and diagnostics for failures and wiring issues. The system uses PWM modulation for high efficiency and complies with EC standards.

Features

Power Supply: 24-36 V battery
Rated Armature Current: 50 A
Max Armature Current (@25°C): 200 A
Rated Field Current: 10 A
Max Field Current: 40 A
Frequency: 16 KHz
Max Heatsink Temperature: 90°C
Operating Temperature: -10°C to 40°C
Speed Reference: Voltage (0-5VDC) or Potentiometer (1-10 KΩ)
Regenerative Braking
Programmable Parameters

Safety Features

Output Short Circuit Protection
MOSFET Short Circuit Protection
Thermal Protection
Low Voltage and Overvoltage Protection
Reverse Battery Protection
Overcurrent Protection based on Temperature
Potentiometer and Wiring Fault Detection

I/O Connector
The controller uses a 16-pin Molex connector for various inputs and outputs, including potentiometer inputs, mode inputs, electrobrake coil, main contactor coil, horn, alarm, and switches for forward and backward motion.

Parameters
The controller allows for extensive parameter configuration, including acceleration ramps, speed limits, current limits, and safety settings. Default values are provided, and parameters can be reset to default if needed.

Mechanical and Wiring
The document includes mechanical drawings and a complete wiring diagram, detailing the connections and configurations for installation and operation.

Catalog excerpts

7CH4E200 MICROPROCESSOR CONTROLLER FOR SEPARATELY EXCITED MOTORS-1

7CH4E200_E_0_S DATE : 10/01/2007 REV. 0.0 7CH4E200 MICROPROCESSOR CONTROLLER FOR SEPARATELY EXCITED MOTORS - USER’S GUIDE -

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7CH4E200 MICROPROCESSOR CONTROLLER FOR SEPARATELY EXCITED MOTORS-2

10/01/2007 7CH4E200_E_0_S 1 - INTRODUCTION - The 7CH4E200 is a controller for separately excited motors powered by battery 24/36V for traction applications. The chopper is equipped with a powerful microprocessor for digital control of the speed, current regulation and failures of the motor ; an efficient diagnostics of the failures and wrong wiring connections, programmability of the main parameters . The MOSFET power stage is operating with PWM modulation. The ripple of the current is very low so the efficiency of the system is very high . The chopper is designed in accordance with the most...

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7CH4E200 MICROPROCESSOR CONTROLLER FOR SEPARATELY EXCITED MOTORS-4

10/01/2007 7CH4E200_E_0_S 3 - COMPLETE WIRING DIAGRAM –

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7CH4E200 MICROPROCESSOR CONTROLLER FOR SEPARATELY EXCITED MOTORS-5

10/01/2007 7CH4E200_E_0_S 4 - I/O CONNECTOR - 16v Molex connector (Molex p/n.39012160, contacts p/n.39000038) fig.3 Pin 1: HI –POT. INPUT Positive Potentiometer Supply Pin 2: C-POT.INPUT Central Potentiometer, or Voltage (0-5Vdc) Speed Reference Input Pin 3: LO-POT.INPUT Negative Potentiometer Supply, or Gnd Voltage Speed Reference Input Pin 4: Pin 2:V_MAX (OPTIONAL) Max Speed input voltage (0 – 5 V) or Max speed input potentiometer (>100 K). Pin 5: PUSH Default N.C. input contact ( +V_Batt/Pin14) for Backward safety. This input is active when open. Pin 6: MODE 2 INPUT Default N.O. input to +V...

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7CH4E200 MICROPROCESSOR CONTROLLER FOR SEPARATELY EXCITED MOTORS-6

10/01/2007 7CH4E200_E_0_S 5 Pin 12: FORWARD SWITCH N.O. input to +V battery. Pin 13: BACKWARD SWITCH N.O. input to +V battery. Pin 14: COMMON HIGH +V battery output for switches. Pin 15: KEY IN Key switch input (+V battery). Pin 16: +B OUTPUT Positive supply output for “HORN” and “ELECTROBRAKE” coils. 4v Molex connector (Molex p/n.3901240, contacts p/n. 39000038) Used for handheld programmer Power screws (M5) M6 screws: + B: Positive DC power supply input, - B: Negative DC power supply input, -M: Negative Motor Armature output. M5 screws: E1: Positive Field output ( in forward direction ), E2:...

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7CH4E200 MICROPROCESSOR CONTROLLER FOR SEPARATELY EXCITED MOTORS-7

10/01/2007 7CH4E200_E_0_S 6 - PARAMETERS - PARAMETER DESCRIPTION MIN MAX DEFAULT RESET TO DEFAULT Reset to default 0 2 2 ACCELERATION RAMP Acceleration ramp 0.5 5.0 3.0 REVERSE RAMP Reverse dec. ramp 0.5 5.0 1.5 NEUTRAL RAMP Neutral dec. ramp 0.5 5.0 1 FORWARD SPEED Forward max.peed 20 100 100 BACKWARD SPEED Backward max speed 10 100 60 MINIMUM SPEED Minimum speed 0 20 0 BATTERY VOLTAGE Battery Voltage 24 36 24 SPEED REFERENCE Speed Reference s-ended BW/FW s-ended REF. DEADBAND Reference Dead-band 0.05 0.50 0.20 E-BRAKE DELAY Brake delay 0.0 9.9 2.0 MODE 1 SPEED Speed in Mode 1 10 100 50 MODE...

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