ZMR 2-6S 30A Bidirectional Self-Starting Brushless Speed Controller for DIY Power Tools and Industrial Motors
The ZMR 30A Bidirectional Brushless ESC is a versatile electronic speed controller designed for DIY modification and industrial brushless motor applications. Supporting a wide input voltage range of 7V to 25.2V (2-6S LiPo), it is well-suited for powering brushless systems in water pumps, fans, knife grinders, hand grinders, and electric hand drills. With a maximum continuous current of 30A and peak power output of 500W, this controller delivers reliable performance across a broad range of motor configurations.
- Model A - Power-On Auto-Start: Motor starts automatically at full speed when power is applied. No external control input required.
- Model B - Dial Switch Start/Stop: Start and stop functions are controlled via a dial switch. Motor runs at full speed once started.
- Model C - Rotary Switch Speed Control: Motor start, stop, and speed are all controlled through a single rotary switch, allowing variable speed operation.
- Model D - Dial Switch Direction + Knob Speed Control: Speed is adjusted via a knob, while a dial switch controls stop and directional change. Forward and reverse rotation can be switched freely after the motor has started.
Available in four distinct control variants - Model A, B, C, and D - the ZMR 30A ESC offers flexible start, stop, speed, and directional control options to match specific application requirements. Built-in protections against temperature rise, locked-rotor conditions, and overcurrent events ensure safe and stable operation even under demanding loads. For motors drawing up to 20A, this 30A-rated unit provides adequate headroom for extended run cycles. Long-term use requires adequate heat dissipation, with forced air-cooling or water-cooling recommended for sustained high-load operation.
Key Features
- Input Voltage Range: Supports 7V to 25.2V (2-6S LiPo battery packs)
- Maximum Continuous Current: Rated at 30A with a peak power output of 500W
- Four Control Variants: Model A (power-on self-start), Model B (dial switch start/stop), Model C (rotary switch for start, stop, and speed), Model D (dial switch for stop and reverse with separate speed knob)
- Bidirectional Motor Control: Model D supports free switching between forward and reverse rotation after start-up
- Maximum Speed Support: Up to 224,000 RPM for 2-pole motors, 74,000 RPM for 6-pole motors, 40,000 RPM for 12-pole motors, and 35,000 RPM for 14-pole motors
- Temperature Protection: Built-in over-temperature shutdown to prevent damage during prolonged use
- Locked-Rotor Protection: Detects and responds to stall conditions to safeguard the motor and controller
- Overcurrent Protection: Automatically limits current beyond rated threshold to extend component life
- DIY and Industrial Compatible: Designed for brushless power tools, pumps, fans, and grinding applications rather than aircraft use
Applications
- Water pumps and fluid circulation systems
- Industrial and domestic fans
- Knife grinders and bench grinders
- Hand grinders and angle grinders
- Electric hand drills and rotary tools
- DIY brushless motor modification projects
- Small-scale industrial brushless drive systems
Note: The product is not intended for RC aircraft or drone applications. Polarity must be observed during wiring — reversed connections will damage the controller. For Models A and B which run at full speed on power-up, adequate heat dissipation (forced air or water-cooling) is strongly recommended for sustained operation.
