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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. SIL applications require an external series
relay used to ensure outputs achieve failsafe action. See ControlEdge HC900 Process & Safety Controller
Safety Manual for additional details.
Specifications for this module and for other modules are given in the Specifications manual. Examples of
DC Output wiring are shown in Figure 65 - 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.
Jumper Comb
Two-position jumper combs are available (as an option for barrier style terminal blocks only) for
connecting digital common wiring between terminals 10 and 12, and for connecting +24Vdc between
terminals 9 and 11. See Figure 66.
+V Terminals
The +V1 (terminal 9) and +V2 (terminal 11) are the positive power supply input to power the output
circuits for the two groups of eight inputs per group. The +V supply must provide minimum 24 Vdc at 65
mA (min) per group.
Hazardous voltages exist at terminal blocks.
Using switches at field devices disconnect the field wiring from power sources before servicing.
Failure to comply with these instructions could result in death or serious injury.
Revision 10
ControlEdge HC900 Process & Safety Controller User and Installation Manual
May 2019
115
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