Endress+Hauser SS2100i-2 - Page 23

Introduction
Hardware Installation and Maintenance Manual 1
–11
RELAY DRIVER AND 4-20 mA
CONTROL BOARD STACK
FUSES
(F2. F1)
TERMINAL BLOCK TB2,
OUTPUT SIGNALS
COMMON
NO
NC
ASSIGNABLE ALARM
GENERAL FAULT
ALARM
CUSTOMER
GROUND
AC POWER
SUPPLY
BACKPLANE
ARM9
CONTROL
BOARD
STACK
COMPONENT
GROUND
HYTEK
TEMPERATURE
CONTROLLER
TERMINAL
BLOCK (TB3),
INTERNAL
PRESSURE/
TEMPERATURE
ALARM/
SIGNAL
RELAYS
PROTECTIVE
GROUND
Figure 1–6 Analyzer A ARM9 electronics control board
(AC) showing signal terminal block and alarm relays
SIGNAL
CONVERTER
RS-232 TO
RS-485
(OPTIONAL)