MITSUBISHI MR-S11-200-Z37 Servo Drive

I. Model Code Interpretation
MR-S11: Mitsubishi’s older MELSERVO small servo drive series
200: Rated output power 200W
Z37: Special function option version (custom firmware for machine tools / specialized equipment, the standard MR-S11-200 does not have the Z37 suffix)
Location: Single-axis compact AC servo driver, derivative of the narrow chassis model from the old J2 platform, now discontinued, only disassembled spare parts are available on the market

Core Electrical Specifications Power supply source
Single-phase AC 200~240V 50/60Hz
Power output
Rated power: 200W
Continuous output current: 3.7A
Peak output current: 7.4A (sustainable for 3 seconds at 200% overload)
Compatible with motors
Mitsubishi 200W incremental encoder servo motor, standard 2500ppr encoder feedback Control mode
The three modes of position control, speed control, and torque control are compatible, and the DSP performs full digital closed-loop operation.

Hardware Interface Configuration
Upper-level control signals
CN1: Pulse instruction input (differential / single-ended pulse), limit switch, origin, alarm output, analog speed setting
Encoder interface CN2
Receiving incremental encoder A/B/Z phase feedback of the servo motor
Power terminals U/V/W
Three-phase servo motor power output; L1/L2 main power input
Communication port
RS422 serial port, supporting Mitsubishi servo debugging software, and reading and writing parameters with handheld operation panel
Panel indicator lights
POWER, ALM, RUN, encoder abnormality, overload, overvoltage fault LED status indication

 Physical and Environmental Parameters
Overall dimensions: 148 (W) × 88 (H) × 35 (D) mm
Overall weight: approximately 0.43 kg
Installation: Standard 35mm DIN rail snap-in installation
Operating temperature: -10℃ ~ +60℃ (inside the control cabinet)
Protection level: IP20 (only for cabinet use)
EMC: Meeting the industrial machine anti-interference standard

 Differences of Special Versions with Z37 Suffix
The ordinary MR-S11-200 has a general standard firmware; MR-S11-200-Z37 is a custom version for the equipment manufacturer:
Built-in dedicated electronic gear ratio, origin return logic;
Compatible with CNC machines / surface mount machines for special motion sequences;
Some internal parameters are locked and cannot be directly replaced by the ordinary MR-S11-200; replacement requires re-downloading the Z37 firmware;
Pulse input filtering, overload protection threshold are optimized for the equipment.

Typical Application Scenarios
Old PCB surface mount machines, dispensing equipment, small CNC feed axes;
Precise positioning servo for printing, packaging equipment;
Small transfer mechanism for automated assembly lines;
Replacement parts for old Japanese equipment (the original factory has stopped production and there is no new supply).