90 H-S81-HS Installation & Operation Manual — P/N LS10114-000HI-E:A 2/24/2015
Parts of the H-S81-HS System I/O modules
S81-E2001-1 Bus
The module is connected to a S81-T8003-1 termination module with 8 termi-
nals with a 20-way flat cable.
S81-E2001-2 Bus
The module is connected to the field terminal block with the S81-CCT6 6-conductor
multi-polar cable.
Standard Connection Diagrams
S81-MOD-BIL Weighing Module
The S81-MOD-BIL module, together with the S81-F7008-1 module, allows to monitor cylinder
load status and to signal even the slightest extinguishing gas leakage without delay. The weighing
module communicates with the control module through the RS485 bus that accepts up to 32 mod-
ules. Two thresholds, pre-alarm and alarm, can be set per weighing module when programming.
Function Termination with Flat Cable Termination with Multi-conductor Cable
TX DATA RS232 TX
∅ 1
S81-T8003-1
1
White
S81-CCT6
RX DATA RS232 TX
∅ 22
Brown
GND G
∅ 33
Green
Positive RS485 +
∅ 44
Yellow
Negative RS485 -
∅ 55
Gray
GND G
∅ 66
Pink
---
∅ 77
---
∅ 88
Figure 2.45 Field Connections
Figure 2.46 RS485 Standard Connection Diagram
NOTE: Connect a 120 Ohm, ¼ watt resistor between L+ and L- terminals on the weighing end
module to balance the RS485 bus.