BLAZER® IV Series
1/4 – 5 HP
Isolated Regenerative Drives

Standard Features

Regenerative action provides four quadrant speed control
Isolation amplifier for providing isolated armature current feedback
Impedance isolation, 5 Meg Ohms, for armature voltage feedback isolation
Tachometer and encoder feedback are insensitive to direction of motor rotation
Encoder power supply, +12 VDC @ 50 mA, terminal strip accessible
Jog Delay to allow rapid JOG without de-energizing the line contactor to extend contactor life
Bridge delay circuitry built in to extend contactor life
Terminal strip access to Accel/Decel output, Velocity Loop output and Current Loop input for systems interface
Internal jogging pot for adjustment of Jog Speed
Summing input with on board trim pot to allow voltage summing with speed reference
Jumper selection to allow summing input to be clamped or not clamped in the Jog Mode
Jumper selection to control summing input polarity
45º angle depluggable terminals for all customer connections except line, armature and field connections
Terminal strip connections for Forward Run, Reverse Run, Forward Jog, Reverse Jog, Ramp Stop and Emergency Stop
LED indicators for Power, Forward and Reverse directions
DCM connector and signal test points for easy troubleshooting
Inner current loop for fast stable response to load change
Metal film resistors and cermet pots for temperature stability

I.C. regulated power supplies
High frequency multi-pulse gating
Conservative power section rating
R-C decoupling of signal level inputs for superior noise rejection
AC line fuses
Line MOV and snubber for transient protection
Functional terminal strip labeling and logical P.C. board layout
Independent adjustable linear acceleration and deceleration in both the forward and reverse directions
Independent max speed for forward and reverse directions
Independent current limit for forward and reverse directions
Integral null adjustment
Adjustable IR compensation
Current range selectable by jumper
Armature, encoder or tachometer feedback selectable by jumper
Two tachometer feedback voltages selectable by jumper: 7 or 50 VDC per thousand RPM tach feedback
300 PPR encoder feedback
Power On/Off switch for control circuit (enclosed models only)
Membrane switch control panel for Run Forward, Run Reverse, Jog Forward, Jog Reverse and Ramp Stop. Mushroom style locking button for Emergency Stop (enclosed models with control panel only)

NEMA 12 enclosure for enclosed models
Armature contactor and Dynamic Braking for safety disconnect in stopped condition

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