Bimba OLE - Manual (Page 12)

STEP+ STEP
–
DIR
–
EN+ EN
–
FAULT
+
FAULT
–
DIR+
h. Apply power and run self test
The DRV-4 and DRV-8 have built in Self Test functions.
When switch 8 is moved to the ON position, the
drive will automatically rotate the motor back and
forth, two turns in each direction. This feature can
be used to confirm that the motor is correctly wired,
selected and operational. Factory default is “OFF.”
8
ON
8
OFF
SELF TEST
The drives have three inputs:
• STEP: a high speed digital input for step pulse commands, 5-24 volt logic
• DIR: a high speed digital input for the direction signal, 5-24 volt logic
• EN: a 5-24V input for commanding the removal of power from the motor
Table 8
Pulses per
revolution
Degrees per
step
Pulse frequency re-
quired for 300 RPM
Pulse frequency re-
quired for 3000 RPM
200 1.8 1,000 Hz 10,000 Hz
400 0.9 2,000 Hz 20,000 Hz
2000 0.18 10,000 Hz 100,000 Hz
5000 0.072 25,000 Hz 250,000 Hz
12800 0.028 64,000 Hz 640,000 Hz
20000 0.018 100,000 Hz 1,000,000 Hz
Microstepping provides smoothest rotation. However, a faster step pulse
rate (frequency) is required for a given RPM as shown in Table 8 below.
i. Connect input signals
10
inside drive
220 pF
STEP+
STEP-
220 pF
DIR+
DIR-
Motor & Power Supply
Connector
Run Current, Idle Current
Steps/rev, Inertia, Self Test
Input & Output
Signals
Motor Selector
Status LEDs
STEP and DIR inputs can be converted to STEP CW and STEP CCW by
moving the internal jumper S3. For detailed instructions, go to Step “K” of
this section.
Refer to the illustration below for identification of step, direction, and
enable inputs on the driver screw terminal blocks.