Specifications

Chapter 2 Installation and Wiring|VFD-B Series
Revision July 2008, BE16, SW V4.08 & V5.00 2-21
WARNING!
1. Short-circuiting [B2] or [-] to [+2/B1] can damage the AC motor drive.
Grounding terminals (
)

Make sure that the leads are connected correctly and the AC drive is properly grounded.
(Ground resistance should not exceed 0.1
Ω
.)

Use ground leads that comply with local regulations and keep them as short as possible.

Multiple VFD-B units can be installed in one location. All the units should be grounded
directly to a common ground terminal, as shown in the figure below. Ensure there are no
ground loops.
goodexcellent
not allowed
2.4.4 Control Terminals
Circuit diagram for digital inputs (SINK current 16mA.)
+24
SINK Mode
multi-input
terminal
Internal Circuit
DCM
+24V
Multi-Input
Terminal
DCM
Internal Circuit
SOURCE Mode
Terminal symbols and functions
Terminal
Symbol
Terminal Function
Factory Settings (SINK)
ON: Connect to DCM
FWD Forward-Stop command
ON: Run in FWD direction
OFF: Stop acc. to Stop Method
REV Reverse-Stop command
ON: Run in REV direction
OFF: Stop acc. to Stop Method