MRD1G5MA Woodward MRD Series Datasheet & Technical Manual

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Woodward MRD1G5MA MRD Series The Woodward MRD1G5MA, also cataloged as the MRD1G5MA Digital Speed Control Module, operates as a dedicated...

SKU: MRD1G5MA

Manufacturer: Woodward
Product No.: MRD1G5MA
Product Type: Digital Speed Control Modules
Product Origin: USA
Payment:T/T, Western Union
Weight: 1800g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Woodward MRD1G5MA MRD Series

The Woodward MRD1G5MA, also cataloged as the MRD1G5MA Digital Speed Control Module, operates as a dedicated hardware component for precise engine speed control within governor and actuator control networks.

Hardware Specifications

Parameter	Specification
Model	MRD1G5MA
Brand	Woodward
Origin	USA
Weight	1.5 - 1.8 kg
Dimensions	273.6 x 214.1 x 59.2 mm
Operating Temp	-40 to +70 deg C
Power Consumption	10 W
Input Power	12-32 VDC (typical 24 VDC)
Control Accuracy	+/- 0.1%
Speed Range	0-10,000 RPM (configurable)
Response Time	< 50 ms
Inputs	3-phase current inputs (5 A nominal), optional analog inputs (4-20 mA, RTD)
Outputs	Voltage or pulse signal for governor control; 4 relay outputs (250 VAC / 5 A)
Communication Interfaces	2x Ethernet, 1x RS232, 1x RS485 (Modbus RTU), CANbus
Protection Class	IP43 (base variant)
Certifications	CE, UL

Actuator Loop Feedback Response

The module contains deterministic internal processing loops optimized for real-time actuator loop feedback response. Mechanical sensor data from the rotating shaft is sampled and reconciled against governor targets within a < 50 ms calculation window. The internal electrical design implements specific thermal heat sink dissipation profiles to prevent component calibration drift across the 12-32 VDC operational power input range during sustained high-load excitation.

Frequently Asked Questions

Q: How does the hardware respond to transient load variations in the speed regulation loop?

A: The processor executes control calculations within a < 50 ms window, generating immediate voltage or pulse signal corrections to adjust the actuator position and maintain the configured RPM setpoint.

Q: Can the communication interfaces operate concurrently during active regulation?

A: Yes. The hardware architecture separates the processing for the dual Ethernet ports from the serial RS-485 Modbus RTU and CANbus interfaces, preventing bus latency from impacting real-time speed regulation loops.

Q: What diagnostic logging capacity is resident on the local hardware memory?

A: The unit features non-volatile memory that retains an event log of up to 200 distinct fault detection sequences and system events independent of external network connectivity.

Field Installation Guidelines

Mounting Rigidity: Secure the module inside the enclosure panel using the designated mounting footprints to minimize the transmission of mechanical vibration from engines or turbines to the internal printed circuit boards.
Shielding Protocol: Terminate all speed sensor, RTD, and 4-20 mA loop shields directly to the master chassis earth busbar. Do not float the shield or loop it through intermediate terminal blocks.
Low-Voltage Routing: Maintain physical separation between the 24 VDC power/signal lines and any high-voltage AC lines (such as the 250 VAC relay output wiring) to prevent electromagnetic cross-talk.
Convection Clearance: Allow a minimum of 50 mm clearance above and below the module housing to facilitate unobstructed air distribution across the internal heat dissipation surfaces.

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