Honeywell Series 8 I/O - Page 26

2. Series 8 I/O Planning and Design
2.2. Series 8 I/O appearance and features
26 Series 8 I/O User's Guide R500
Honeywell April 2017
I/O module/IOTA
Feature/function
Analog Output
withHART
 Extensive self-diagnostics
 Optional redundancy
 HART capable, multivariable instruments
 Safe-state (FAILOPT) behaviors
 Each channel can be configured to HOLD LAST
VALUE, or SHED to a SAFE VALUE.
Analog Output
 Extensive self-diagnostics
 Optional redundancy
 Safe-state (FAILOPT) behaviors
 Each channel can be configured to HOLD LAST
VALUE, or SHED to a SAFE VALUE.
Digital Input 24VDC
 Extensive self-diagnostics
 IOM redundancy
 Input direct/reverse
 Internal or external field power selections
 Galvanic isolation
 Low Latency / High Speed Scanning mode
Digital Input
Sequence of Events
DIGITAL INPUT
SEQUENCE OF
EVENTS
 Extensive self-diagnostics
 Optional redundancy
 1ms Sequence of Events for Discrete Inputs
 Low Latency / High Speed Scanning mode
 On board excitation power (no need for marshalling
power)
 Direct / Reverse Input Indication
 Galvanic isolation