15
MMRG Series
Analog Input Signal (MMRG models)
Instead of using a speed adjust potentiometer, the drive may be wired to
follow an analog input voltage signal that is isolated from earth ground
(Figure 5). Connect the signal common (–) S0. Connect the signal input
(+) to S2. A potentiometer can be used to scale the analog input voltage.
An interface device, such as Minarik Drives model PCM4, may be used to
scale and isolate an analog input voltage.
An analog input voltage range of -10 to 10 VDC is required to produce
an armature voltage range of -90 to 90 VDC with 115 VAC line voltage or
-180 to 180 VDC with 230 VAC line voltage.
IC501
IC502
C509
C511
C512
S3
S0
C510
S1
S2
COMMON
SIGNAL
COMMON (-)
SIGNAL
INPUT (+)
Figure 8. MMRG Analog Input Signal Connections
