OHAUS 7000 Serie Handbuch Seite 5

T71XW
Remove the four 8mm hex head bolts from the rear housing. Open the housing by carefully pulling the front housing forward.
Once all connections are made, reattach the front housing. Tighten the bolts to 2.5 N m (20-25 in lb) torque to ensure a
watertight seal.
Scale Base without Connector to T71P or T71XW
Bases without a circular connector must be attached to one of the internal load cell connectors on the main pc board.
Pass the load cell cable through a cable gland and attach it to terminal
block J4 or terminal block J7. Tighten the cable gland to secure the cable and maintain a tight seal.
Terminal Block J4 (Scale 1)
Pin
1
2
3
4
5
6
7
Jumper connections
When a 4-wire load cell is attached to terminal block J4, jumpers W1 and W2 must be installed.
When a 4-wire load cell is attached to terminal block J7, jumpers W3 and W4 must be installed.
When a 6-wire load cell is attached to terminal block J4, jumpers W1 and W2 must be removed.
When a 6-wire load cell is attached to terminal block J7, jumpers W3 and W4 must be removed.
RS232 Interface Cable to T71XW
Pass the optional RS232 cable through the cable gland and attach it to the terminal block J5. Tighten the cable gland to
secure the cable and maintain a tight seal.
Footswitch to T71P or T71XW
Pass the optional footswitch cable through the cable gland and attach it
to the terminal block J9. Tighten the cable gland to secure the cable and maintain a tight seal.
Connection
+ Excitation
+ Sense
+ Signal
Ground
– Signal
– Sense
– Excitation
Pin Connection
1 RTS
2 TXD
3 RXD
4 CTS
5 Ground
Terminal Block J7 (Scale 2)
Pin Connection
1 + Excitation
2 + Sense
3 + Signal
4 Ground
5 – Signal
6 – Sense
7 – Excitation
EN-3