Figure 55 - Contact Input Wiring Diagram - Honeywell HC900 Installation And User Manual

I/O Module Installation and Wiring - I/O Terminal Block Wiring Diagrams
DC Output Module Wiring
The DC Output Module provides 16 current-sinking outputs in two groups of eight points per group. The
two groups are isolated from each other; outputs are non-isolated within each group. Current sinking
means that a positive voltage potential is continuously applied to one side of each DC output load, and the
negative side of the load is switched internally in the module.
Specifications for this module and for other modules are given in the Specifications section of this manual.
Examples of DC Output wiring are shown in Figure 56 - DC Output Module Wiring Diagram
Over-Current Protection
Electronic high-current and high-temperature limiting provides overload protection; resets after cycling
power. Conventional external fuses may be used if desired.
Reverse-Polarity Protection
A potential of ± 34 Volts will cause no damage to the module; a reverse polarity power supply connection
allows continuous current flow to the loads that are not controlled by the On/Off state of the output circuits.
Revision 19
06/14
Figure 55 – Contact Input Wiring Diagram
HC900 Process Controller Installation and User Guide 101