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Product Name: 2600RG MELLTRONICS DRIVES
Product Description
| HP |
INPUT
VOLTS
AC |
ARM
VOLTS
DC |
FIELD
VOLTS
DC |
100% DC
ARMATURE
CURRENT |
MODEL
NUMBER |
PART
NUMBER |
| 1/4 - 1 |
120 |
90 |
100 |
10 |
2600RG |
262-8000 |
| 1 1/2 - 2 |
120 |
90 |
100 |
20 |
2600RG |
262-8001 |
| 3 - 5 |
240 |
180 |
200 |
25 |
2600RG |
262-8001 |
| 5 - 7 1/2 |
240 |
180 |
200 |
38 |
2600RG |
262-8075 |
Price:
Customer Programmable:
- Input voltage 120 or 240 VAC
- Current range (Horsepower)
- Armature voltage feedback (90 or 180 VDC)
- Tach Feedback
- Torque or Speed Regulation
- IR Compensation (negative or positive)
- 10% reverse operation
- 50 or 60 Hz
- Accel/decel time range .2-4/2-30 seconds
- Ammeter full scale reading (150% or 200%)
GENERAL DESCRIPTION
The MELLTRONICS 2600RG is a high performance, regenerative DC motor control.
Included are many standard features that are available only as options on many
other single-phase regenerative drives. Accessibility to all important internal
regulator points is provided by terminals on the control. This permits the
MELLTRONICS 2600RG to be used in custom engineered applications, as well as in
standard speed regulated applications. The MELLTRONICS 2600RG was designed to
handle most single phase regenerative drive applications without the addition of
external hardware and the need for costly, time-consuming engineering.
Three control models handle the entire 1/4 to 7 1/2HP range of applications.
Drive current limit and inverse time overload protective circuits for rating
within this range are calibrated by means of a jumper change on the main printed
circuit board.
The MELLTRONICS 2600RG controls a DC motor's speed or torque by varying the DC
voltage applied to the motor's armature. Because the control is regenerative, it
can provide power to the load and return that power to the AC power line.
Rectilinear phase control assures stable operation at low speeds and smooth
transitions between motoring and regenerative modes (zero deadband).
The MELLTRONICS 2600RG is a versatile control. Simple jumpered programming
allows the MELLTRONICS 2600RG to operate from either 120 or 240 volt AC input
power at 50 or 60 Hz. Additional jumpers program the control to operate as
either a speed regulator with armature voltage or DC tachometer feedback or as a
torque regulator with armature current feedback. Two control models cover the
entire 1/4 to 5HP range of applications. Drive current limit and inverse time
overload protective circuits for ratings within this range are calibrated by
means of a jumper change on the main printed circuit board. DC output current
varies as a function of an input reference voltage in torque regulated
applications. Changing the torque reference (potentiometer setting) results in a
change in motor torque output.
The MELLTRONICS 2600RG control converts single phase AC input power to variable
voltage DC output power. The DC output is applied directly to the DC motor
armature. DC output voltage varies as a function of an input reference voltage
in speed regulated applications. (Typically, this input reference voltage is
provided by an operator adjustable potentiometer). Changing the speed reference
(potentiometer setting) results in a motor speed change.
The MELLTRONICS 2600RG control is designed for use with either shunt wound or
permanent magnet DC motors. A fixed voltage unregulated DC source is provided
for connection of the motor field in wound field applications. Included in the
MELLTRONICS 2600RG control are many built-in features not available on
competitive units. Motor field economy and separately adjustable rates of
acceleration and deceleration are included on all units. If desired, the
built-in accel-decel control ramps can be by-passed completely by a jumper
change on the control. Current compounding can be added to the speed regulator
by changing another jumper position. Current limit is normally set by a
potentiometer located on the main printed circuit board, but if desired, it can
be adjusted using a remote mounted potentiometer or a customer supplied voltage
signal. An output signal is available for use with one of the MELLTRONICS 2600RG
ammeter kits to provide an indication of drive output current without the
addition of an ammeter shunt. On occasion, customer requirements may dictate
that the operator's devices be mounted on the door of the enclosure.
STANDARD FEATURES
- Circuit Board Indicators - Light emitting diodes (LEDs) of
the main circuit board indicate: DC overload, Field Loss, Instantaneous
Over-current Trip, Run Mode, Jog Mode, SCR's Being Gated, Fault Trip
Circuit. Protective circuits are designed to quickly shut the drive down and
provide a visual indication whenever a DC overload, field loss, or
instantaneous over-current condition occurs. This fault trip circuit
prevents restart. It must be reset before the drive can run again.
- Solid State Full Wave Power Bridge - Uses generously rated
power semiconductors for maximum reliability and long life.
- Isolated Control Circuitry - Provides complete isolation of
the control and regulator circuitry from the AC power bus for protection in
the event of a ground fault. The ammeter, speed potentiometer, and
tachometer are not at line potential. Complete system capability is also
possible without additional isolation accessories.
- Power Supplies - Each MELLTRONICS 2600RG contains and
internal 115 VAC power supply to power the DC loop contractor and drive
logic relays. Internal ±24 VDC, ±15 VDC and a regulated ±10 VDC power
supply are also included.
- Ammeter Output - Motor current can be indicated with the
simple addition of a remote meter.
- Field Economy - Insures longer life for wound field DC
motors. May be easily bypassed or time delayed to meet specific application
requirements.
- Double Break DC Armature Loop Contactor - Full rated and
fully sequenced contactor assures positive disconnect of DC motor when the
stop push button is pushed or whenever and under-voltage condition occurs.
- Remote current Limit - Available by the simple addition of a
potentiometer or DC voltage input.
- Negative IR Compensation- Available by jumper connection.
Allows use of control in jumper applications.
- Current (torque) Regulator - 1% accuracy armature current
regulator allows the operator to control motor torque instead of speed.
- Speed Regulator - 2% accuracy using armature voltage
feedback with IR compensation or 1% accuracy with tachometer feedback.
Regulation may be improved by selecting the proper motor mounted tachometer.
- Separately Adjustable Linear Accel/Decel Control - Two
ranges: 0.2-4 seconds or 2-30 seconds.
- Rectilinear Phase Control - Improves performance at low
speed and near zero load.
- Inner Current Loop Regulator - Inherent high band width
capability for fast response.
- Quadrant Lockout - May be selected by jumper programming to
prevent forward or reverse motoring in certain applications.
- AC Line Filter and Transient Voltage Suppression Network -
Eliminates interaction between other drives or AC equipment.
- Reactors. Snubber Networks - Prevents SCR DV/DT failures due
to line spikes and transients. Provide DI/DT protection during SCR turn on
and aids in SCR turn off during SCR commutation, minimizing the effects of
AC power notching.
- SCR Trigger Circuits - Pulse transformer isolated, hard
firing, high frequency "burst" type pulse train output from
individually grated oscillators insures SCR conduction regardless of the
effects of the notching or incoming AC power line.
- Standard Adjustments - Max, speed, zero bias, acceleration
time, deceleration time, IR compensation, current limit, jog speed, velocity
stability, speed rate and current stability.
- Jog at Preset Speed - Separately adjustable from zero to
plus or minus 30% of base speed.
- Dual Frequency Operation - Controls may be operated from 50
to 60 Hz power supplies by simple jumper change.
- Exclusive Static Adjustable Current Limit - Allows static
setting of the desired current limit value without applying DC power and
without a connected output load whenever the optional test meter in
connected.
- Common Control Circuit Boards - 262-8000 and 8001
MELLTRONICS 2600RG series controls utilize the same PC board regardless of
HP, voltage, frequency, or control mode.
- DC Overload (Armature) - Senses over-current condition with
inverse time shutdown.
- Field Loss Protection - Provides protection against runaway
due to loss of motor field by shutting down the drive.
- High Speed Current Limiting SCR Semiconductor Fuses -
Provide the utmost in fuse coordination and protection of the SCR's and
motor with positive circuit clearing on both AC and DC faults.
- Instantaneous Over-current Protection - Senses armature
fault current quickly to protect both semiconductors and motors against
damaging current levels.
OPTIONS
- Test Meter - This modification consists of a digital panel
meter and multi-position selector switch. It provides the capability to
monitor nine critical drive parameters. The test meter kit plugs into the
regulator PC Board on the 2600RG. It is an ideal addition to the control as
an aid in troubleshooting and start-up.
- Ammeter Kit - The 2600RG control includes circuitry to drive
an external ammeter without the addition of an ammeter shunt. This external
meter can be calibrated in either percent load or in amperes.
(Additional Options - many additional options are available to meet specific
drive application requirements including: reversing, dynamic braking,
process signal follower, specific logic, auxiliary control, field weakening,
and isolation transformers - Contact Melltronics Industrial for details.)
SPECIFICATIONS
Service Conditions:
- Rated Voltage Input: 120 or 240 VAC (±10%) 1 Phase
- Rated Voltage Output: 90 or 180 VDC
- Frequency: 50/60Hz (±2Hz)
- Ambient Temperature: 0-40° C (32° F to 140° F)
- Altitude: Sea Level to 3300 Feet
- Efficiency: Power unit 98% or better depending on selected rating.
Drive system 82% or better depending on selected rating.
- Load Inertia: Not more than motor inertia when referred to motor
shaft.
- Power Factor Corrected AC Line: Drive installation on power factor
corrected AC lines should be avoided where possible.
Performance:
- Control Speed Range: 20:1 for basic control. May be extended to
200:1 by modification.
- Speed Regulations:
For a 95% load change:
Voltage Regulated: 2-5% of max. speed. Speed regulated 1% of max.
speed with any DC tachometer.
For all other variables:
Voltage Regulated: changes up to 15% of top speed can result from
temperature variations, voltage; and frequency variations, and drift.
May be modified to achieve: 0.1% due to 95% load change and 0.15% due
to all other variables.
Adjustments:
- Maximum Speed: 70 to 130% rated speed
- Acceleration Time: 0.2 to 30 sec.
- Deceleration Time: 0.2 to 30 sec.
- Jog Speed: 1 to 30% rated speed
- IR Compensation: 0 to 10% rated voltage
- Current Limit: 1 to 150% of selected range
Control Power:
- Voltage (Relay Logic): 115 VAC
- Spare Capacity: 5 VA
Input Signal Requirements:
- ±10 VDC at 1mA (nominal) for max output
Speed Potentiometer:
- 500 Ohms, 2 Watts
Field Data:
- Voltage: 100 VDC with 120 VAC input 200 VDC with 240 VAC input
- Current: 3 amperes max.
Company Details
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