Mining Vehicle Traction Controls
75 VDC - 250 VDC
Solid-State - High-Voltage - IGBT Controls
Mining Industry Series: LMC-BT & BTC

LMC-BT Control and Model Specifications for Low voltage Battery Supplies:

Maximum Current Ratings*

* Ratings valid to a heat-sink temperature of 70°C (158°F)
Suffix T Denotes two-motor control

Motor Type:	Series Wound	Control Range:	0 to 100%, Plus Optional Bypass
Logic Type:	Micro Controller	Operating Frequency:	2kHz - 10kHz

Supply Voltages: 72 Volts - 128 Volts

Safety Circuits:

Speed Demand: Accelerator input can be a --

Controlled Plug Braking: Programmable from 1% to 15% pulse rate.

Current Limits: D.C. Current Limit - Programmable + 0%, -25%.

Creep Speed: Programmable 0% to 20%.

Controlled Acceleration Delay: Programmable 0 to 2.5 seconds.

Programmable Speed Limit:

The motor-voltage can be limited to between 50% and 100% supply voltage. The limit switch will be normally closed.

Temperature Protection:

Proportional cut back, beginning at a thermistor temperature of 70 degrees centigrade, to a limit of 25% at 90 degrees centigrade.

Arcless Switching of the Contactors.

Contactor Drivers Included: 3.2 amps sinking.

Bypass Closure Requirements:

95% to 100% speed demand from the accelerator
Time-delay run out (2.5 seconds) -- programmable.
50 amps current in the motor.
Motor not in the braking condition.
NOTE: Bypass logic is always built into the control. The fitting of the contactor is an option. If a Bypass contactor coil is not wired into the circuit the control will ignore the bypass demand.

Bypass Drop-Out Requirements: Less than 85% speed demand, or motor in braking mode.

Under Voltage Protection:

The control will shut down in an orderly manner if its control voltages cannot be maintained.

Stored Operational Fault Status: Requires hand-held data terminal to access.

Communication Port: RS232 port.

LMC™ Motor Controls Optional Software Features
Feature		Description
LMC-1		Two Locomotive Tandem Operation (no trackside radio, rs485 wire cable connection, for motor control only)
LMC-2		Two Locomotive Tandem Operation Via Radio Modems, All Locomotive Functions & Trackside Radio Interface.
LMC-3		Overspeed Alarm*
LMC-4		Overspeed Control* (includes LMC-3, overspeed alarm)
LMC-5		Acceleration Wheel-Spin Control**
LMC-6		Anti-Lock Braking**
LMC-7		Battery Charge Status (includes LMC-8, low supply voltage alarm) (operator display required)
LMC-8		Low Supply Voltage Alarm
LMC-9		Motor-Current Differential Alarm
LMC-10		Deadman-Switch Check Circuit
LMC-11		Anti Motor Stall*
LMC-12		Operator Display Software (no display, no housing)
LMC-13		Velocity Feed Back Counter
LMC-14		Closed-Loop Speed Control
LMC-15		Trolley/Battery Combination Software
* Requires installation of one velocity feedback counter - Feature 13.
** Requires installation of two velocity feedback counters, one on each motor axle.
NOTE: Some options are mutually exclusive.

8845 Three Notch Rd. | Troy, Virginia USA 22974
Tel 434-589-8224 | Fax 434-589-3803 | sales@cableform.com