Cosa 9610, Installation, Operation And Maintenance Manual

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INSTALLATION, OPERATION AND MAINTENANCE MANUAL – COSA 9610™
Page 21 of 48
Signal cables
The COSA 9610™ has multiple input and output signals, which can be split in two groups,
analog and digital signals. Both analog and digital signals are to be connected in the
electronics enclosure. Please make sure that the cable glands used are suitably certified.
For details see project specific drawings. Control equipment connected to barrier must not
use or generate more than 250Vrms or 250Vdc.
Analog signals
The COSA 9610™ has two 4-20mA analog outputs (4 optional). The signals can be user-
programmed to represent various measurement readings, such as Wobbe index and CARI
index. The analog output signals are wired via isolating barriers. Please note that these
barriers are to be connected to an intrinsic safe earth (I/S). When no intrinsic safe earth
is available the barriers may be connected to a potential free earth (PE) with a resistance
of less than 1 ohm. For details see project specific drawings.
Digital signals
The digital signals are divided in three, Digital outputs (alarm/status), digital input, and
RS-485 serial signals. For details see project specific drawings.