Digital DC Variable Speed Drive
25 A - 1850 A in Both Single and 4 Quadrant

Overview

DC drives are widely used in applications that require
regeneration, precise speed control, dynamic performance, and constant torque over wide speed ranges. The Mentor II
delivers the universal DC drive solution.
Simple stand-alone applications are easily configured to control motor speed, voltage or current using standard internal settings. Set-up is convenient using the drive keypad, CTKP remote keypad, or MentorSoft, a Windows™ based drive configuration tool. The Mentor II has extensive diagnostic and communication abilities that enhance system reliability. The drive’s standard yet powerful microprocessor is a versatile system component that can eliminate the need for a PLC with integral functions such as thresholds, timers and logic gates that perform basic control.

The simple addition of the MD29, a 32-bit application
co-processor card, provides high performance drive systems
with local intelligence for true distributed control. The MD29
enables users to incorporate custom or proprietary process
control application programs to their drive. The Mentor II also
provides a wide range of communication protocol options.
Mentor II systems have proven to be extremely reliable and
are ideally suited to web handling, winders, slitters, extruders, wire drawing, converting lines, and plastics production. The Mentor II’s integrated design and highly programmable features make it an ideal choice for OEMs and System Integrators, as well as replacement or retrofit drives for End Users.

Simple Operation Easy set up of the drive can be done using the main control panel or via a standard communications interface from a host computer. Fast configuration of standard applications can be achieved using 10 parameters or less. Faster Drive Set-Up Programming the Mentor II has never been easier. Designed to save commissioning time, the drive has easily assimilated function menus browsed and edited via five navigator keys. Better Control A comprehensive self-tuning algorithm gives improved current loop performance for a more uniform response at all speeds. Drive performance is also enhanced with full PID digital speed control. More Functions The main circuit board has been developed to incorporate many additional features as standard. Massive Systems Potential All analogue inputs and most of the digital control inputs are user-configurable, making Mentor II a true systems drive having more versatility and flexibility than ever before. Wide Ranging, More Flexible Communications Mentor II is able to communicate directly with PLCs and host computers or via optional interface cards. This is achieved with the standard RS485 port. Digital Speed and Position Loop This allows several drives to be run in speed or position synchronization. Centre winder The drive torque is continuously adjusted to compensate for changing coil diameter, machine losses and coil inertia. Shaft Orientation This allows the user to specify the final position of the motor shaft relative to an electronic feedback datum, for example a marker pulse from an encoder. The position is adjusted by simply changing the value of the appropriate parameter. 'S' Ramp This facility provides a curved function at each of a user defined acceleration/deceleration ramp.   Mentor II Specifications   Environment Ambient Operating Temperature 0 to 40°C Derate current 1.5% per °C to 55°C Cooling Method Convection and forced convection, model dependent Humidity 95% non-condensing at 40°C Storage Temperature -40 to 55°C Altitude 0 to 4000m Derate 1% per 100m between 1000m and 4000m Enclosure Chassis (IP00)   AC Supply Requirements Voltage 208 to 480 VAC -5% +10% 525/575/660 VAC ±10% (Optional M350 and above) Phase 3Ø Frequency 45 to 62 Hz Efficiency 98%   Control Feedback Methods Armature Voltage (resolution 0.83 volts) DC Tachometer (resolution 0.1%) Encoder (resolution .01%) Field Control Current regulated 8 Amps max (M210/M210R and smaller) Voltage regulated .675 or .9 X Line-to-line voltage (M350/M350R and larger) Analog Input Resolution 12 bit (Qty 1), 10 bit (Qty 4) Serial Communications 4-wire RS422 or RS485 optically-isolated Protocol is ANSI x 3.28-2.5-A4 Baud rate is 4800 or 9600   Protection AC Line Under voltage Trip 180 VAC MOV Voltage Transient Protection Input transient suppression Instantaneous Overcurrent Trip 300% armature current Armature Open Circuit Armature circuit is open Drive Overload Trip Inverse time, 150% for 30 seconds Phase Loss Trip Loss of input phase Overtemperature Trip Heatsink exceeds 100°C Motor Thermal Trip Motor over-temp switch or Thermistor Feedback Loss Loss of motor feedback Feedback Reversal Tachometer or Encoder wired backwards Field Loss No field current Field On Field current during auto-tune Field Overcurrent Field current greater than field demand Current Loop Loss Loss of 4-20 mA reference External Power Supply Short circuit on +24 VDC user power supply Power Supply Internal power supply out of tolerance Serial Communications Mode 3 serial comms data loss Loss Processor 1 Main control processor fault Watchdog lap Processor 2 Watchdog Trip Second control processor fault (MD29) Hardware Fault Hardware malfunction on control board Memory Fault Stored parameter checksum fault External Trip User interlock fault (programmed) Software Fault (A29) MD29 software fault   Approvals & Listings UL, cUL File #E58592 Vol. 5C Section 1 CE Designed for marking ISO 9001:2000 Certified Manufacturing Facility ISO 14001 Certified Manufacturing Facility               Wide range of network communication options User configurable analogue and digital drive inputs Easy to use PC configuration, Software: Mentor soft Regeneration up to 1.15 x VRMS Available in single and four quadrant Armature voltage, tacho or encoder feedback with loss detection Phase sequence tolerant with loss detection 0.025% resolution for analogue speed demand 0.1% speed holding for 100% load change with tacho feedback On-board field control with loss detection 150% overload capacity for 30 seconds with motor overload protection Taper current limit