Mettler Toledo IND560x Manual De Instalación página 63

3.3.3.4. SICSpro Connection
The IND560x terminal supplies Intrinsic Safe Power (6 wires, with two power, two IS-CL and two
Ground lines) for SICSpro platform.
In the SICSpro version of the IND560x terminal, the cable connection from the platform is made to
the main board Digital Scale Terminal (Figure 3-22).
The SICSpro platforms are supplied with a discrete length of open-end cable, which connects to the
Digital Scale Terminal on the IND560x terminal's main board.
3.3.3.5. COM1 Serial Port Connection
The COM1 port includes connections for an intrinsically safe serial device. Figure 3-23 indicates
which terminal is which signal on the COM1 port. The cable length of this connection is limited to
10m (33 ft.).
An example of connecting to an RS-232 device in the safe area through a Zener diode barrier is
shown in Figure 3-24. Refer to the entity approval values of COM1 when selecting a barrier. Note
that seals and other protective devices will also be required to meet hazardous area wiring codes.
64061929 | 11 | 07/2017
The SICSpro platforms are available with load cell cable lengths 0.125m, 1.5m, 5m, 10m,
and 20m. The SICSpro platform cables cannot be modified in the field.
Figure 3-24: Sample RS-232 Connection
Terminal
J7-1 TxD - Transmit data
J7-2 RxD - Receive data
J7-3 GND - Logic Ground
J7-4 GND - Logic Ground
Figure 3-23: COM1 Port Signals
METTLER TOLEDO IND560x Installation Manual
Signal
3-19