Honeywell Series 8 I/O - Series 8 I;O and C300 Topology

2. Series 8 I/O Planning and Design
2.3. Series 8 I/O and C300 topology
R500 Series 8 I/O User's Guide 27
April 2017 Honeywell
I/O module/IOTA
Feature/function
Digital Output 24Vdc
 Extensive self-diagnostics
 Functional redundancy
 Output direct/reverse
 Safe-state (FAILOPT) behaviors
 Each channel can be configured to HOLD LAST
VALUE, or SHED to a SAFE VALUE.
 Fuse-less short circuit protection allows a short circuit to
exist without blowing any fuses. When a particular
channel is shorted, internal circuits detect this and remove
power to the field connection. The channel remains de-
energized until the short circuit is repaired.
 Latched, pulsed or pulse-width modulated output
 Galvanic isolation
 Output read back checking to screw terminal
TC/RTD
 TC and RTD operation
 Remote cold junction capability
 1 sec PV scanning with OTD protection
 Configurable OTD protection (See below)
 Temperature points can be added in 16 point increments
Digital Input Pulse
Accumulation module
 Extensive self-diagnostics
 IOM redundancy
 Input direct/reverse for Digital Input channels
 Internal or external field power selections
 Galvanic isolation
 PV processing or Pulse Accumulation functionality based
on the user configuration.
2.3 Series 8 I/O and C300 topology
Series 8 I/O is attached to an IOLINK that is being mastered by a C300 controller. It is
important to note that the IOLINK serves as data repository for IOM function blocks in
Control Builder to provide communications interface with Series 8 I/O.