MMP SA-2550A
Page 6 of 24
Midwest Motion Products
DESIGN, MANUFACTURING & DISTRIBUTION - MOTION CONTROL EQUIPMENT
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HARDWARE SETTINGS
Configuration Switch Functions
SW1
Description
Setting
On
Off
1
Duty Cycle mode selector. Activates internal PWM feedback.
Duty Cycle mode
Other modes
2
Inhibit logic. Sets the logic level of inhibit pins.
Drive Inhibit is active low
Drive Inhibit is active high
3
Test/Offset. Switches the function of the Test/Offset pot between
an on-board command input for testing or a command offset
adjustment. OFF by default.
Test
Offset
4
Outer loop integration. Activates or deactivates integration. ON,
by default, for current mode and OFF for other modes.
Inactive
Active
5
Mode Selection. See mode selection table below.
-
-
6
-
-
7
Velocity feedback polarity. Changes the polarity of the internal
feedback signal and the velocity monitor output signal. Inversion
of the feedback polarity may be required to prevent a motor run-
away condition.
Standard
Inverted
8
Mode Selection. See mode selection table below.
-
-
9
Reserved
-
-
10
60/120 degree commutation phasing setting
120 degrees
60 degrees
Mode Selection Table
SW1-4
SW1-5
SW1-6
SW1-8
Tachometer
CURRENT
ON
OFF
OFF
ON
Not Connected
DUTY CYCLE
OFF
ON
OFF
OFF
Not Connected
ENCODER VELOCITY
OFF
OFF
OFF
OFF
Not Connected
HALL VELOCITY
OFF
OFF
ON
OFF
Not Connected
TACHOMETER VELOCITY
OFF
OFF
OFF
OFF
Connected
SW2
Description
Setting
On
Off
1
Tachometer Input Voltage Scaling. Adjusts the maximum range of
the tachometer input.
Max tachometer input values from 5V to 61V. See
Maximum Tachometer Input Voltage Table below.
2
3
4
Configures the drive to output either peak and continuous
current values, or continuous current only.
Peak and Continuous Current
Continuous Current Only
Maximum Tachometer Input Voltage Table
Default switch settings are shaded.
Switch
Maximum Tachometer Input Voltage (
±
VDC)
61
53
45
37
29
21
13
5
SW2-1
OFF
ON
OFF
ON
OFF
ON
OFF
ON
SW2-2
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
SW2-3
OFF
OFF
OFF
OFF
ON
ON
ON
ON
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