External Nimh Battery Pack - Mettler Toledo IND560x Manual De Instalación

3.3.3.1.2.

External NiMH Battery Pack

Details on the installation and wiring of the IND560x-PAB can be found later in this chapter in the
Wiring Connections for Internal Options section. The IND560x-PAB (Power Adapter Board) is an
internally installed option that enables the IND560x to be powered by an external NiMH battery
pack.
3.3.3.2. Analog Load Cell Connection
When using an analog load cell version of the IND560x, load cell connections are made to the
connector located on the main board as shown in
The IND560x terminal is designed to power up to four 350-ohm load cells (or a minimum
resistance of approximately 87 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:
Ensure that the TSR of the load cell network to be connected to the IND560x has a resistance
greater than 87 ohms before connecting the load cells. If the resistance is less than 87 ohms, the
IND560x will not operate properly.
In addition, the maximum cable distance must be reviewed. Table 3-5 provides recommended
maximum cable lengths based on cable gauge and correct operation of the terminal. Note that the
entity values for the load cell cable must be considered as a safety factor in the installation.
3-16 METTLER TOLEDO IND560x Installation Manual
NOTE: The entity values for the load cell cable must be considered as a safety factor in the
installation.
TSR =
Terminal Wire Color
U2 Green
GND Brown
U3 Pink
GND --
U4 Gray
GND --
U5 Black
GND Red
U6 Blue
NC --
and
Figure 3-18
Load Cell Input Resistance (Ohms)
Number of Load Cells
.
Figure 3-19
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