Honeywell HC900 User Manual

Components and Architecture - Hardware Components
Revision 19 HC900 Process Controller Installation and User Guide 19
06/14
I/O Expansion Rack
I/O expansion ("remote") racks, shown in Figure 8, are available to accommodate additional input/output
modules, and/or to enable location of I/O modules close to the process and remote from the controller. For
C75, all I/O is in a rack or racks separate from the controller rack.
An I/O expansion rack includes:
1. Rack, available in 4- 8-, or 12-slot versions
2. Power Supply
3. Scanner 1 Module (C50 and C50S/C70 and C70S) (shown) or Scanner 2 Module (C75)
4. Grounding bars (for I/O wiring; optional)
5. Input/Output modules
6. I/O Terminal Blocks
7. Power Status Module (PSM)
(req’d if using Reserve Power Supply)
8. Reserve Power Supply (optional). Available in
8- or 12-slot racks.
Figure 8 – I/O Expansion Rack Components

Honeywell HC900 Specifications

General

Series	HC900
Redundancy	Optional
Programming Language	Function Block Diagram, Ladder Logic, Structured Text
Inputs	Analog, Digital
Outputs	Analog, Digital, Relay
Display	Optional
Control	PID, Advanced Control
Power Supply	24V DC or 100-240V AC
Storage Temperature	-40°C to 85°C
Humidity	5% to 95% non-condensing
Communication Protocols	Modbus, Ethernet