Hardy Enviro Bench Scales - Manual (Page 10)

Section 3: Installation
12/09 5 0596-0315-01 Rev B
2. Remove the 120 VAC plug from the end of the power cord and attach a proper 220-240 VAC plug.
Connect the green wire and the shield to the ground lug. Note: The original wiring connects brown to
AC hot and blue to neutral.
3. Reattach all cables and replace the front cover assembly.
Caution: Improper connections at J4 can cause catastrophic damage to the Indicator
3.2.2 Connecting to the Load Cells
Connect the bench scale interface
cable wires to the terminal strip
TB1 on the small block pcb as
follows:
TB1 Pin no. FUNCTION
1 (
) Excitation
2 (+) Excitation
3 (+) Sense
4 (-) Sense
6 Shield
7 (+) Signal
8 (
) Signal
Pin numbers added for clarity
Notes: No internal sense jumpers are provided. Jumpers must be installed from +Excitation to +Sense and
from –Excitation to –Sense if no sense leads are used.
Refer to the appropriate Enviro™ Series Bench Scale Service Manual for the proper interface wiring
color code.
Reassemble housing and proceed with installation.
3.2.3 Remote switches
The Enviro™ Series has three
available remote switch inputs. A dry
contact normally open switch can be
mounted and operated remotely using
the connections on TB3.