Overview

The M5-2QB-12-48 is an industrial DC motor controller designed for 24/48 VDC motors with switching currents up to 12 A. It is intended for reliable motor control in industrial environments and mounts on a DIN rail (EN 50022) with a compact width of 22.5 mm.

Key Features and Functions

• Speed control via analog input (0–10 V, 24 V tolerant)
• Adjustable creep speed
• Direction reversal (left/right)
• Switchable dynamic braking (armature short circuit)
• Adjustable start and stop ramps
• Current limiting and current shutdown selectable
• Short circuit detection with fast shutdown (~100 µs)
• Temperature monitoring and overvoltage protection
• Status indication via green (ready) and red (error) LEDs

Technical Specifications

Electrical Data

• Nominal voltage: 24 / 48 VDC
• Supply voltage range: 15 to 58 VDC
• Max continuous current: 12 A (typical max 24 A)
• Short circuit detection current: 150 A
• Power driver: MOS-FET
• Digital inputs: 5 inputs at 24 VDC
• Analog input: 0–10 V, 24 V tolerant, input impedance ~98.5 kΩ
• Digital outputs: 2 galvanically isolated outputs, 24 VDC, 50 mA max, short-circuit proof

Mechanical and Environmental Data

• Dimensions: 114.5 x 22.5 x 99 mm
• Weight: 110 g
• Terminal type: Screw terminals, wire cross-section 0.2 to 2.5 mm²
• Mounting: Any orientation on DIN rail EN 50022
• Operating temperature: -20 to +60 °C
• Storage temperature: -30 to +85 °C
• Humidity: Up to 95%, non-condensing
• EMC compliance: EN 61000-6-2, EN 61800-3, EN 61000-6-4
• Flammability rating: UL94V-0 for housing, terminals, PCB

Control Inputs and Outputs

• Digital inputs for left/right rotation, dynamic brake activation, current limit/shutdown selection, and speed setpoint selection
• Analog input for speed control scaling (0–10 V)
• Digital outputs indicate operational readiness and overcurrent status

Operating Modes and Functions

Speed Control

Two independent speed setpoints selectable via digital input. Each setpoint is adjustable by trim potentiometers (TR1 and TR2) controlling PWM duty cycle (5–97%). The analog input scales the PWM output from 0 to the selected setpoint maximum.

Dynamic Braking

Activated by a dedicated digital input. When enabled, the motor is braked by short-circuiting the armature. If both direction inputs are high simultaneously, the motor stops as if dynamic braking was activated.

Current Limiting and Shutdown

Selectable via digital input:

• Current Limiting (input high): If motor current exceeds the set maximum, speed is reduced to keep current within limits.
• Current Shutdown (input low): If current exceeds the limit, the motor is switched off. Restart requires resetting direction inputs.

A current monitoring delay (adjustable via TR3, 0–1000 ms) prevents false triggering during motor start or speed changes.

Start and Stop Ramps

• Start ramp (TR5): Adjustable acceleration time from 50 to 4000 ms.
• Stop ramp (TR4): Adjustable deceleration time from 0 to 4000 ms.
• Stop ramp also applies to speed changes via analog input.
• Setting TR4 fully negative enables immediate dynamic braking on stop.

Short Circuit and Temperature Protection

• Short circuit detection triggers shutdown within ~100 µs and locks the module for a fixed time.
• Temperature sensor shuts down motor if maximum temperature is exceeded; restart possible after cooldown.

Configuration and Settings

• Maximum motor current set via DIP switches (1 to 16 A). Settings above 12 A are for short-term use only.
• Trim potentiometers for speed setpoints, current monitoring delay, start and stop ramps.

Status Indication and Error Handling

• Green LED1 indicates ready state.
• Red LED2 indicates error state with blink codes for specific faults:
• 1: Overcurrent
• 2: Temperature error
• 3: Short circuit
• 4: Overload
• 5: Overvoltage supply
• 6: Undervoltage supply
• 7: Power stage error
• Errors stop the motor; reset by cycling direction inputs or module reset.
• Internal system errors require manual reset.

Installation and Safety Instructions

• Installation and commissioning must be performed by qualified personnel with power off.
• Initial operation should be without load.
• Do not touch live parts after power-on; module operates only on safety extra-low voltage.
• Module must be mounted in a suitable enclosure with appropriate fusing.
• Use EMC-compliant wiring; shielded cables and filters recommended if needed.
• Use approved power supplies and ensure all connected devices are industrial-grade.
• Unauthorized opening voids warranty and may cause hazards.
• Regular maintenance includes checking ventilation and cleaning cooling openings.

Additional Notes

• Empirical derating curve provided for operation at high continuous currents; ensure adequate wiring, spacing (minimum 20 mm between modules), and airflow.
• Module dimensions: 114.5 mm length, 22.5 mm width, 99 mm height.

Contact Information

KALEJA GmbH
Strübelweg 14, D-73553 Alfdorf, Germany
Phone: +49 7172 93711 0
Email: [email protected]
Website: www.kaleja.com