Drives Service & Support > Legacy > 1371

The SpeedPak Non-Regenerative Custom Drive Specifications Std. Mods Equipment List Isolation Transformer-Standard Industrial-Type Drive Motor
Status	Inactive: August, 1993 Discontinued: August, 1998 Obsolete: August, 2000
**Recommended Upgrade	Bulletin 1395

SPECIFICATIONS

• Three Phase - Six Pulse
• Power Units - 2 thru 1500 HP

The specifications as listed below apply to the basic SPEEDPAK control. These specifications may vary for a given system design due to the particular D.C. motor characteristics.

Environment - The basic power unit is designed to operate under the following conditions.

• Altitude: Up to 3300 feet above sea level
• Ambient Temperature: 40°C (104°F) maximum
• Line Voltage Variation: -5% to +10%
• Line Frequency: 50 or 60 Hz.

Speed Range - 50:1
Note: The Bulletin 1371 Available Speed Range and Motor Heating - Motor design in many instances limits the available controllable speed range as well as the amount of torque that can be produced at reduced motor speeds. This is usually dependent on type of enclosure, class of insulation, and frame size. If continuous full load torque is required at slow speeds, some supplementary ventilation or a derated motor must be supplied.

All standard motor base speeds are available.

Speed Regulation - No load to full load: 2% by armature voltage feedback

Power Conversion Efficiency - 98%

STANDARD MODIFICATIONS AVAILABLE

• Dynamic Braking
• Reversing with Dynamic Braking
• Jog Speed - Separately Adjustable
• Thread Speed - Separately Adjustable
• Auto/Manual Relay
• 12 Channel Circuit Analyser

EQUIPMENT LIST

DRIVE CONTROL ASSEMBLY

Enclosure

NEMA 1 gasketed with white interior

Basic A.C. Control

• Incoming A.C. power terminals
• 115 volt fused control and transformer
• Auxiliary fusing
• Field power transformer (optional)
• Run relay - Regulator relay

Basic D.C. Control

• HP rated D.C. loop contactor
• Overload protection

Regulator

• Standard regulated reference (6 volts)
• Armature voltage feedback
• Linear accel-decel control
• Maximum speed adjustment
• High gain OP amps - IR compensation
• Continuous current limit, adjustable 0-150%
• Phase loss and current unbalance protection
• Front wiring and patented screw type terminals on printed circuit boards. Boards removable without removing wiring.
• No interaction between drive adjustments

Armature Power Unit

• 6 SCR full wave bridge - Current limiting fuses
• Pulse distribution matrix and amplifier
• Transient voltage filters
• Integral air fan and flow switch (above 10 HP)
• Protective metal enclosure

Field Power Units

• Silicon diode field supply
• Field loss protection

ISOLATION TRANSFORMER-STANDARD

• Three phase 480 volt primary
• Secondary voltage as required for specified armature voltage
• NEMA 1 enclosed for separate mounting

INDUSTRIAL-TYPE DRIVE MOTOR

• Designed for use with static power supply - available with a wide variety of optional features