BLD75 & BLD75-1 - 7 Amp Bilevel Stepper Drivers  

   
bluebull Now CE Certified
bluebull Bilevel Drive Operation
bluebull Short Circuit Protection
bluebull Open Motor Protection
bluebull Fault LED
bluebull 10 Amps/Phase Operating Current
bluebull 7 Amps/Phase Standstill Current
bluebull Unipolar Operation
bluebull Half-Step and Full-Step Operation
bluebull Motor On/Off Input
Printable Spec Sheet
   

 

The BLD75 and BLD75-1 Step Motor Drivers contain Anaheim Automation driver technology which includes protection against shorted motors or open motor connections. It has an output current capability of 10 amps peak (7 amps continuous). If either a short or open circuit occurs, a Fault LED turns on and the driver shuts down. Like other stepping motor drivers, the BLD75 series drivers use a bilevel drive technique. High voltage is applied to rapidly build up the current in the motor windings and a low voltage is used to sustain the current. This bilevel drive technique achieves outstanding motor performance without high frequency switching as used in chopper drives. Therefore, there are little or no EMI or RFI problems, and motor heating is greatly reduced.

Note: The BLD75 and BLD75-1 stepper motor drivers replace the BLD72, BLD72XCE, BLD72-1, and BLD72XCE-1 units. These are exact replacements for the older models as far as in size and specifications.

(Addendum PDF)

 

   

  Dimension  
 

BLD75:

 
 



 
 

BLD75-1:

 
 



 

Wiring Information
  8_lead_wire  

  Specifications  
 

Control Inputs (All) : (Terminals 5, 6, 8, 9)
TTL-compatible
Logic "0" - 0 to 0.8 V
Logic "1" - 3.5 to 5.0 V

Fault Reset: (Terminal 4)
Pulled up to +5VDC through a 10k Ohm resistor
Logic "1" (open) - Driver enabled and Fault detection enabled
Logic "0" - Resets a Fault condition (driver is disabled when this input is low). This input must be held low
for at least 100ms.

Clock Inputs : (Terminals 5 and 6)
Pulse required; 15 microseconds minimum. The clock input is pulled up/down internally to +5VDC / 0VDC
through a 10k Ohm resistor, based upon JP2 selection.

Direction Control: (Terminal 5)
Pulled up to +5Vdc through a 10k Ohm resistor
Logic "1" (open) - CW
Logic "0" - CCW

Excitation Mode Select: (Terminal 8)
Pulled up to +5Vdc through a 10k Ohm resistor
Logic "1" (open) - Half-step
Logic "0" - Full-step

Power ON/OFF: (Terminal 9)
Logic "1" (open) - motor current on
Logic "0" - motor current off

Output Current Rating: (Terminals 1, 2, 3, 11, 12, and 13)
10 Amps/phase maximum operating current, 7.0 Amps/phase maximum standstill current, over the operating voltage and temperature range. Motor phase ratings of 1.0 Amp minimum are required to meet the minimum kick level.

Power Requirement:
Anaheim Automation recommended transformer.

Operating Temperature : 0 to 60 degrees C
It is recommended that the aluminum driver baseplate be mounted on a larger aluminum plate, or similar
heat-conducting structure, whenever possible. This will prevent the driver baseplate from overheating and degrading driver reliability. Fan cooling is also recommended whenever possible.

FUSING: A 5 Amp Fast Blow fuse in series with the primary winding of the transformer is required.

Torque Speed Curves

 

 
 

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