7CH4Q200 MICROPROCESSOR FOUR QUADRANT CONTROLLER FOR PM DC MOTORS

Product catalog summary

Introduction
The 7CH4Q200 is a four-quadrant chopper controller designed for PMDC motors, specifically for traction applications powered by 24/36V batteries. It features a microprocessor for digital control of speed, current regulation, and diagnostics. The controller is built with an H-bridge MOSFET power stage operating with PWM, ensuring high efficiency and low current ripple. It complies with key EC standards.

Features

Power Supply: 24-36 V battery
Rated Current: 60A
Max Current: 200A (230A on request)
Frequency: 16 KHz
Max Heatsink Temperature: 110°C
Operating Temperature: -10°C to 40°C
Speed Reference Potentiometer: 1-20 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
Potentiometer and Wiring Fault Detection

Models

7CH4Q200: 200 Ampere, On Board
7CH4Q205: 200 Ampere, External
7CH4Q230: 230 Ampere, On Board
7CH4Q235: 230 Ampere, External

I/O Connector
The controller uses a 16-pin Molex connector for various inputs and outputs, including potentiometer inputs, safety switches, and diagnostic outputs. Key connections include:

Pin 1-3: Potentiometer Inputs
Pin 5: Push (Backward Safety)
Pin 6: Disable (Motor Inhibition)
Pin 10: Alarm (Diagnostic LED)
Pin 12-13: Forward/Backward Switches

Parameters
The controller allows for extensive parameter customization, including acceleration ramps, current limits, speed references, and safety settings. Key parameters include:

F5: Acceleration Ramp
F8: Current Limit
F15: Brake Delay
F22: Forward Maximum Speed
F28: Battery Voltage Setting

Each parameter has a default, minimum, and maximum value, allowing for tailored performance adjustments.

Catalog excerpts

7CH4Q200 MICROPROCESSOR FOUR QUADRANT CONTROLLER FOR PM DC MOTORS-1

7CH4Q200_E_7_S DATE : 08/01/2007 REV. 7.0 7CH4Q200 MICROPROCESSOR FOUR QUADRANT CONTROLLER FOR PM DC MOTORS - USER’S GUIDE -

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7CH4Q200 MICROPROCESSOR FOUR QUADRANT CONTROLLER FOR PM DC MOTORS-2

08/01/2007 7CH4Q200_E_7_S 1 - INTRODUCTION - The controller 7CH4Q200 is a 4 quadrant chopper for PMDC 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 an “H bridge” configuration operating with PWM. The ripple of the current is very low so the efficiency of the system is very high . The chopper is designed in accordance...

Open the catalog to page 2

7CH4Q200 MICROPROCESSOR FOUR QUADRANT CONTROLLER FOR PM DC MOTORS-5

08/01/2007 7CH4Q200_E_7_S 4 - I/O CONNECTOR - 16v Molex connector (Molex p/n.39012160, contacts p/n.39000038) fig.4 Pin 1: HI –POT. INPUT Positive Potentiometer Supply Pin 2: C-POT.INPUT Central Potentiometer, or Voltage (0,5-4,5Vdc) 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 potentiometer (>100 KÙ). Pin 5: PUSH (IF NOT USED MUST BE CLOSED TO PIN14) Default N.C. input contact ( +V_Batt/Pin14) for Backward safety. This input is active when open. Pin 6: DISABLE When the contact is closed...

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7CH4Q200 MICROPROCESSOR FOUR QUADRANT CONTROLLER FOR PM DC MOTORS-6

08/01/2007 7CH4Q200_E_7_S 5 Pin 10: ALARM Connection for the diagnostic Blinking Led indicator (5Vdc-10mA) output : the number of blinks means the alarm type (example 5 blinks means Alarm 5). Pin 11: MODE 1 Default N.O. input to +V battery. 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: HOURMETER Hour-meter output ( +V battery when running, 100mA max). 4v Molex connector (Molex p/n.3901240, contacts p/n. 39000038) Used for handheld programmer...

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