![OHAUS T72XW AM Скачать руководство пользователя страница 16](http://html1.mh-extra.com/html/ohaus/t72xw-am/t72xw-am_instruction-manual_3537195016.webp)
EN 8
7000 SERIES INDICATORS
Analog Load Cell Connections
WARNING!
TO AVOID DAMAGE TO THE PCB OR LOAD CELL, REMOVE POWER FROM THE
T72XW INDICATOR AND WAIT AT LEAST 30 SECONDS BEFORE CONNECTING
OR DISCONNECTING ANY HARNESS.
Load cell connections are made to the load cell connector located on the main board as shown in Figure 1-5.
The T72XW indicator is designed to power up to ten 350-ohm load cells (or a minimum resistance of approximately
35 ohms). To confirm that the load cell load for this installation is within limits, the total scale resistance (TSR) must
be calculated. To calculate TSR:
TSR =
Load Cell Input Resistance (Ohms)
Number of Load Cells
Ensure that the TSR of the load cell network to be connected to the T72XW has a resistance greater than the
minimums listed above before connecting the load cells. If the resistance is below the minimum, the T72XW will not
operate properly.
In addition, the maximum cable distance must be reviewed. Table 1-4 provides recommended maximum cable
lengths based on TSR and cable gauge.
Table 1-4: Recommended Maximum Cable Lengths
TSR (Ohms)
24 Gauge
(meters/feet)
20 Gauge
(meters/feet)
16 Gauge
(meters/feet)
350
243/800
610/2000
1219/4000
87 (4-350
cells)
60/200
182/600
304/1000
43 (8-350
cells)
30/100
91/300
152/500
35 (10-350
cells)
24/80
60/200
120/400
The T72XW indicator is designed to support both 2mV/V and 3mV/V load cells from the same circuitry. A load cell
output rating selection jumper is not required.
Figure 1-6 shows the indicator definitions for the analog load cell indicator strip. Note that when using four-wire load
cells, jumpers must be placed between the +Excitation and +Sense indicators and between the
Excitation and
Sense indicators.
Figure 1-6: Load Cell Termination
Note:
For the standard four-wire cable: If an increase in load results in a decrease in weight display, reverse the
signal wires (+SIG and
SIG).
www.
GlobalTestSupply
.com
Find Quality Products Online at:
Содержание T72XW AM
Страница 2: ...www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...
Страница 3: ...www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...
Страница 4: ...www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...
Страница 8: ...www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...
Страница 142: ...www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...