Gill 1199-PK-085, User Manual

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HS-50 & HS-100 Doc. No 1199-PS-0035 Issue 3 June 2021
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Page 11
7.11 Cabling
Ensure that strain relief measures are employed when installing the cables. Do not allow the whole
weight of a cable to be applied to the connector.
An RS422 compatible cable should be used, with the number of twisted pairs matching the
application.
Generic description
– Twisted pairs with drain wire, screened with aluminised tape, with an overall
PVC sheath.
Typical Wire size 7/0.2mm (24AWG), 22AWG wire may also be used.
The table shows some suitable manufacturers’ references; other manufacturers’ equivalents can be
used.
No. of pairs Gill ref. Belden ref. Batt electronics ref.
9 026 - 02663 8774 91009
The cable allows for the connection of all: -
Power inputs.
Digital data inputs and outputs.
Other example twisted pair screened cable types (24AWG) are:-
No. of pairs Gill ref. Belden ref. Batt electronics ref.
2 - 9729 -
3 026 - 02660 9730 91030
4 026-03156 9728 91199
6 - 9731 91031
7.12 Cable length
The maximum cable length is dependent on the chosen communication format (RS232, RS422 or
RS485), the baud rate, and, to a lesser extent, on the cable type and the local electrical ‘noise’
level.
The above table shows the typical maximum lengths at the given baud rates, using the
recommended cable. If any problems of data corruption etc. are experienced, then a slower baud
rate should be used. Alternatively, a thicker or higher specification cable can be tried.
Communication format Baud rate Max. cable length
RS232 (PCIA Output) 9600 6.5 m (20 ft) or if using Cat 5 cable see
manufacturers recommendations
RS422 9600 1 km (3200 ft)
Analogue outputs - voltage N/A 6.5 m (20 ft)