EM-363A is a full-bridge controller for brushed DC motors. It is designed for applications requiring bidirectional motor control, adjustable motion profiles, configurable input functions and Modbus communication.
Adjustable acceleration and deceleration ramps provide smooth starts, stops and direction changes. The adjustable current limit protects the motor and mechanical system against excessive current and torque and can also be utilized in end-stop applications.
The EM-363A provides dedicated inputs for the primary motor-control functions:
Two adjustable speed settings are available. The SPEED-2 input activates the second preset speed or can be configured as a 0–5 V or 0–10 V analog speed-control input.
The STOP input can alternatively be configured as a 0–5 V analog current-limit input. In this mode, the signal corresponds to a current-limit range of 0–20 A.
In continuous mode, the motor runs for as long as the corresponding direction input remains active. In impulse mode, a short command starts the motor and the selected operating state remains active until another command changes it.
The digital inputs are divided into control and limit groups. The logic of each group can be configured independently for NPN or PNP operation.
The adjustable current limit protects the motor and mechanism during startup, overload or obstruction conditions. During startup, the maximum available current can rise to 30 A to provide additional starting torque.
Independently adjustable start and stop ramps provide controlled acceleration and deceleration over a range of 0–5 seconds.
The 2 kHz PWM setting provides the highest continuous and peak current capability. The 16 kHz setting enables quieter motor operation but reduces the available output current.
The start-kick function provides additional starting effort in applications with high starting friction. Automatic reverse can change the motor direction according to the configured operating conditions.
The freewheel function releases the motor from active drive and braking, allowing the motor shaft to rotate freely.
The fault output indicates overtemperature and, depending on the selected parameters, current-trip conditions. In the active-low configuration, the fault line is normally high and is pulled low when a fault occurs.
Pulling the disable input below 1 V stops the motor and prevents a new start while the signal remains active. Where permitted by the wiring instructions, fault and disable lines from multiple controllers can be connected to provide synchronized stopping.
The high-current NPN open-collector brake output can control an external magnetic brake or a compatible braking load.
The integrated two-wire RS-485 interface supports the Modbus RTU protocol at 9600 or 19200 bit/s. It enables motor control, parameter adjustment and monitoring from a PLC, automation controller or other Modbus master.
Parameters can be configured using the EM-236 Interface Unit. PC-based configuration is available with EmenTool Lite and the EM-268 interface.
Mobile configuration is available through the EmenTool application and the EM-326 interface.
The controller is supplied in a robust black metal housing with lockable spring-cage connectors. It can be mounted horizontally or vertically using screws.
Optional DIN-rail mounting is available using the EM-T55 rail fastener.
| PCB and program version | PCB v1 / program 363C v1.9 |
| Supply voltage | 10–35 VDC |
| Adjustable overvoltage limit | 15–40 V |
| Start-up voltage | 9 V |
| Shutdown voltage | 8 V |
| Continuous current at 2 kHz, 100% PWM | 15 A (Ta < 50 °C) |
| Continuous current at 2 kHz, 5–99% PWM | 10 A (Ta < 50 °C) |
| Continuous current at 16 kHz, 100% PWM | 10 A (Ta < 50 °C) |
| Continuous current at 16 kHz, 5–99% PWM | 5 A (Ta < 50 °C) |
| Peak current at 2 kHz | 30 A for 5 s |
| Peak current at 16 kHz | 25 A for 5 s |
| Adjustable current limit | 0.1–25 A (max. 30 A at startup) |
| Overtemperature limit | 100 °C |
| Adjustable start and stop ramps | 0–5 s |
| PWM frequency | 2 kHz / 16 kHz |
| Speed input range (SPEED-2) | 0–5 V or 0–10 V = 0–100% |
| Current-limit input range (STOP) | 0–5 V = 0–20 A |
| Digital input levels | High = 4–30 V / Low = 0–1 V |
| RS-485 | Two-wire half-duplex, Modbus RTU, 9600 or 19200 bit/s |
| Control input impedance | typ. 47 kΩ |
| Limit-FW / Limit-BW input impedance | typ. 10 kΩ |
| Control input response time | typ. 5 ms |
| Fault output | Configurable NPN or PNP output, max. 35 V / 1 A |
| Brake output | NPN open collector, max. 35 V / 4 A |
| Disable input activation | Uin < 1 V (NPN) |
| Motor and supply connectors | Max. 2.5 mm² cable |
| Control connectors | Max. 1 mm² cable |
| Dimensions | 89 × 26 × 81 mm |
| Height with EM-T55 rail fastener | 88 mm |
| Weight | 169 g |
| EMC | CE tested for industrial environments |
| Operating temperature (Ta) | −40…+60 °C |
Ordering larger quantities +100pcs.
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