Internal Connections - OHAUS 3000 Serie Mode D'emploi

EN-2
Rechargeable Battery Power
Allow the battery to charge for 12 hours before using the scale on battery power. The instrument can be operated during
charging, and the battery is protected against overcharging. For maximum operating time, the battery should be charged at
room temperature.
Mounting Bracket to T32XW
Align the mounting bracket over the threaded holes in the side of the indicator and install the knobs. Adjust the indicator to the
desired angle and tighten the knobs.

2.3 Internal Connections

Some connections require the housing to be opened.
WARNING: ELECTRICAL SHOCK HAZARDS EXIST WITHIN THE HOUSING. THE HOUSING SHOULD
ONLY BE OPENED BY AUTHORIZED AND QUALIFIED PERSONNEL. REMOVE ALL POWER
CONNECTIONS TO THE UNIT BEFORE OPENING.
Opening the Housing
Remove the four Phillips head screws from the rear housing. Remove the front housing being careful not to disturb the
internal connections. Once all connections are made, reattach the front housing.
T32XW
Remove the four hex head screws from the rear housing.
Open the housing by carefully pulling the top of the front housing forward.
Once all connections are made, reattach the front housing.
The screws should be tightened fully to maintain a watertight seal.
Connecting the Scale Base
Pass the load cell cable through the strain relief and attach it to terminal block J5.
Re-tighten the strain relief to ensure a watertight seal.
Jumper connections
For a 4-wire load cell with no sense wires: Jumpers W2 and W3 must be shorted.
For a 6-wire load cell that includes sense wires, see Figure 2-2. Jumpers W2 and W3 must
be opened.
For load cells with an extra ground shield wire: Connect the shield to the center position (GND)
of J5.
After wiring is completed and jumpers are in place, replace the indicator housing screws. Make sure the strain relief is
properly tightened.
RS232 Interface Cable to T32XW
Pass the optional RS232 cable through the strain relief and attach it to terminal block J7.
Re-tighten the strain relief to ensure a water tight seal.
Pin
J5-1
J5-2
J5-3
J5-4
J5-5
J5-6
J5-7
Pin Connection
J7-1 TXD
J7-2 RXD
J7-3 GND
Connection
+ Excitation
+ Sense
+ Signal
GND
– Signal
– Sense
– Excitation
3000 SERIES INDICATORS