Delta Electronics Elevator Drive VFD-VL User Manual page 38

Analog input signals are easily affected by external noise. Use shielded wiring and keep it
as short as possible (<20m) with proper grounding. If the noise is inductive, connecting
the shield to terminal ACM can bring improvement.
If the analog input signals are affected by noise from the AC motor drive, please connect
a capacitor and ferrite core as indicated in the following diagrams:
Digital inputs (FWD, REV, MI1~MI8, COM)
When using contacts or switches to control the digital inputs, please use high quality
components to avoid contact bounce.
Digital outputs (MO1, MO2, MCM)
Make sure to connect the digital outputs to the right polarity, see wiring diagrams.
When connecting a relay to the digital outputs, connect a surge absorber or fly-back diode
across the coil and check the polarity.
The specification for the control terminals
RB
MRC
RC RA
Frame
C, D, E
Revision Nov. 2008, VLE1, SW V1.03
wind each wires 3 times or more around the core
The Position of External Terminals
MRA
MCM FWD
MO1 MO2
REV
Torque
8 kgf-cm (6.9 in-lbf)
Terminal: 0V/24V 1.6 kgf-com(1.4 in-lbf) 30-16 AWG (0.051-1.3mm
Chapter 2 Installation and Wiring|
ACI/AUI1/AUI2
C
ACM
ferrite core
MI7
MI1 MI3 MI5
MI2
MI4 MI6
DCM
Sink/Source
mode switch
COM AUI1 +10V ACM
MI8 AUI2 ACI
-10V
Wire
22-14 AWG (0.3-2.1mm
+E24V
2
)
2
)
2-13