Yaskawa SRDA-MH50 Motoman Servo Pack Drive

The YASKAWA SRDA-MH50 Servo Pack gives high-performance Motoman MH50 series robots excellent motion control for tough industrial jobs. This servo amplifier works perfectly with DX100 controllers, giving you strong torque for moving and putting things together.

SRDA-MH50 is a 15kg compact unit that is optimized for Yaskawa Motoman MH50 robots (50kg payload, 2061mm reach). It offers sophisticated servo drive capabilities in a 34.93 x 53.34 x 38.10 cm enclosure. It guarantees dependable operation in high-speed applications by supporting multi-axis synchronization up to 72 axes.

Yaskawa SRDA-MH50 Servo Pack Details:

• Type: Servo amplifier/pack for MH50 robot axes, compatible with DX100/DX200.

• Power: 3-phase input, approx. 4kVA consumption for sustained performance.

• Weight/Dimensions: 15.2 kg; 349 x 533 x 381 mm (packaged).

• Axes Support: Matches MH50’s 6 axes with ±0.07mm repeatability.​

• MPN Variants: Often listed as 157137-1 or JZRCR-series equivalent.

Technical Specifications: Yaskawa SRDA-MH50 Robot Drive

Key Features

1. Integrated Multi-Axis Drive Architecture: Combines intermediate rectification, inverter modules, and digital signal processors into a single rack-mounted chassis, minimizing inter-cabinet wiring and loop latency.
2. Closed-Loop Absolute Feedback Processing: Interfaces with high-resolution serial encoders to execute real-time torque compensation and eliminate kinematic drift during heavy payload cycles.
3. Thermal & Overload Protection: Built-in thermistor feedback circuits, overcurrent trip protection, and heat sink dissipation fans prevent thermal runaway in high-duty cycle production environments.
4. Dynamic Braking & Regeneration Control: Integrated dynamic brake circuitry and high-capacity bleed circuits control regenerative back-EMF during rapid axis deceleration.
5. Ruggedized Industrial Enclosure: Hardened PCB conformal coating and isolated ground planes provide electromagnetic compatibility (EMC) against noise common in marine power systems and industrial welding plants.

Industry Usage:

1) Handling materials and putting them on pallets in the car industry.

2) Machine tending for loading and unloading CNC and press brakes.

3) Assembly line work involving exact placement of parts.

4) Welding and handing out massive parts.

Frequently Asked Questions

What are the main causes of an overcurrent alarm on the Yaskawa SRDA-MH50?

Overcurrent trips generally result from shorted output motor windings, failed internal IGBT power stages, ground faults in the flexible arm cable harness, or seized mechanical brakes on the manipulator axis.

Is parameter downloading required when installing a replacement SRDA-MH50?

Yes. The drive stores axis parameter tables inside the controller CPU. When installing a replacement unit, initialize the axis parameters via the Motoman teach pendant under Maintenance Mode to align motor poles, gear ratios, and encoder offsets.

Can the SRDA-MH50 be used across all 6 axes of the robot?

The SRDA-MH50 houses multi-axis drive channels sized specifically for the primary high-torque base axes (S, L, U) and wrist axes (R, B, T) of the 50 kg payload series. Verify the exact axis configuration label on your drive faceplate before commissioning.

How do I check if the internal cooling fan is operational?

The unit runs an integrated tachometer feedback on internal blowers. If dust or bearing wear slows the cooling fan below the safety threshold, the controller generates a servo drive cooling failure alarm to prevent heat sink damage. Fans should be replaced every 3–5 years during scheduled dry-dock or factory overhauls.