10
I/O Wiring and Descriptions
The amplifier has five inputs and two outputs. These inputs and outputs are designed to
interface to a 24 volt logic system. The amplifier is shipped so that the operation of the inputs
is as follows.
With no wires connected to ENB, SPD, or SHFT, the amplifier is not enabled and normal
operation will not occur. The inputs are activated by connecting them with a switch closure to
any of the provided GND terminals.
J2
120 VAC
L1
L2
LOW SPD 1
SPD 2
SPD 3
HIGH SPD 4
J1
REF
REF GND
COS
COS GND
SIN
SIN GND
THERM
THERM
SHIELD
R
E
S
O
L
V
E
R
120 VAC
*NOTE: CLOSE ONE
SWITCH AT A TIME
AUX
SIG
RESP
CUR
BAL
RESET
ENCODER
I/O
GND
ORIENT
RAMPS
GND
-COM
+COM
CUR
TAC
GND
FLT
SHFT
SLOW
SPD
ENB
I/O WIRING
EXAMPLE
The actual decision as to open or closed switches occurs at a voltage level between 5-8 volts
DC. Less than 5 volts is active; greater than 8 volts is inactive.
The Enable (ENB) Input must be ON (grounded) to allow the amplifier to be enabled.
The Shift (SHFT) and Speed (SPD) Inputs are used in conjunction with switches or relays that
are connected to the winding select connector on the motor to select the four available speed-
torque ranges of the motor:
Amplifier Inputs
Motor Inputs
SHFT
SPD
LOW 1
690 rpm
GND
GND
Connect L1 to LOW SPD 1
2
1630 rpm
GND
OPEN
Connect L1 to SPD 2
3
3300 rpm
OPEN
OPEN
Connect L1 to SPD 3
HI 4
6600 rpm
OPEN
OPEN
Connect L1 to HI SPD 4
A 10 volt command signal will produce the above speeds. The 3 speed is produced with a 5
volt command.
