Delta Electronics Elevator Drive VFD-VL - Manual (Page 38)

Chapter 2 Installation and Wiring|
Revision Nov. 2008, VLE1, SW V1.03 2-13
„ 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:
C
ACI/AUI1/AUI2
ACM
ferrite core
wind each wires 3 times or more around the core
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
The Position of External Terminals
+10V
MO1 MO2
MI3
MI4
MI7
MI6
COM ACM AUI1
ACI
MCM
MRC
RA
MRA
RC
RB
REV MI2
FWD MI1
AUI2
MI5
MI8 -10V
Sink/Source
mode switch
+E24V DCM
Frame Torque Wire
8 kgf-cm (6.9 in-lbf) 22-14 AWG (0.3-2.1mm 2 )
C, D, E
Terminal: 0V/24V 1.6 kgf-com(1.4 in-lbf) 30-16 AWG (0.051-1.3mm 2 )