User manual AD CM M
Page 10 of 20
Note
Both M2S and M3S versions can be used as M1S version if the jumpers ADJ, VCO and CK on the mezzanine
board are removed (see section 3 and 4 for more information about the jumpers).
2.3.1 COMMAND connector
Input voltage for all inputs varies from 5 to 24VDC
This 12-pins connector is available on all driver versions, it provides access to all functionality.
# I/O
Type Designation
Explanation
M1 M2 M3
1
I
1-PH ON
Full-step; 1-phase ON (wave)
X X X
2 I FS/HS
Full Step/Half Step mode switch
X X X
3
I
CCW/CW
Sense of rotation switch, default = CW
X X X
4 I CLK
1
External clock input
X X X
5
I
RUN
Starts the clock generator
X X
6
I
STOP
Stops the clock generator
X X
7
I
BOOST
Current boost
X X X
8
O
BUSY
Output = Low when clock is active
X X
9
I
STB
Current Standby
X X X
10 O
2
VCC
+5V power supply (max
200mA)
X X X
11 O
GND
G
round potential
≥
0 Volt
X X X
12
I
VCO
External control voltage for the oscillator (VCO)
X X
12
3
O
HOME
Active when Phase A is commutated with positive current
X
1
CLK input is active on positive trigger signal
2
Output, sink and source pins, to connect directly
3
PIN12 can be set as input or output. Please refer to PIN12 description below.
Functional description of the Inputs/Outputs on COMMAND connector:
PIN1,
Operation mode Selection
Selection can be one phase-ON (LH*) or twp phase-ON (LL) commutation
Input is not active if not connected
With one phase-ON, the motor provides the same torque than with two phase-ON mode, but with a
lower current consumption. In phase-ON, the AD CM M1S automatically increases the current in the
motor phase by a factor of 1.4, meaning that the current consumption is 1.4 x I
nominal
instead of 2 x
I
nominal
in two phase-ON.
PIN2
Step resolution selection
Input is not active if not connected.
Selected can be Full-step (LL*) or Half-step (LH)
If PIN1 is active, only full-step operation is possible
PIN 1+2 Truth table
PIN 1
PIN 2
Function mode
LL*
LL
Full-step, two phase-ON
LH
LL
Full-step, one phase-ON
LL
LH
Half-step (two phase-ON)
LH LH
Full-step, one phase-ON
*LL for Logic Low and LH for Logic High (see table of section 1.2 for values). LL can also mean that the
PIN is not connected.
