Function
The Digital Output bussed 24VDC (DO24V) module provides reliable 24V digital output signals to control other process
equipment as well as solenoid valves and interposing relays. The DO24V can support high energy outputs to reduce the
number of external components in the output loop.
Notable Features
• Extensive internal diagnostics to ensure data
integrity
• Optional redundancy
• Direct/Reverse output support
• Safe-state (FAILOPT) behaviors
• “Fuse-less” short circuit protection
• Latched, pulsed or pulse-width modulated output
(per channel)
• Galvanic isolation
Bussed 24VDC DO
The Digital Output Bussed 24VDC has provisions for both internal and external field power excitation. As a bussed
output device, all of the outputs share a common return (ground). All outputs get their power from the same source,
which can be either the system power supply or an externally connected 24V power supply. When selection is from an
external source, outputs can be galvanically isolated from the Series C power system.
Fuse-less Short Circuit Protection
This unique feature 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.
FAILOPT
Series C DO module will support FAILOPT parameter on a per channel basis. The output can be directed by
configuration to either HOLD THE LAST VALUE, or SHED to a SAFE VALUE. The safe value can be configured by the
user.
Detail Specifications - Bussed 24VDC DO
Parameter Specification
Input / Output Model CC-PDOB01 - 24Volt Digital Output , Field Isolated, Bussed output
IOTA Model Numbers CC-TDOB01 Non Redundant 9”
CC-TDOB11 Redundant 12”
Output Channels 32
Output Type Source
Load Voltage 15 30 VDC Maximum
Load Current
(A group of 8 channels
consists of channels: 1-8, 9-
16, 17-24, and 25-32)
(Absolute Maximum) Per Channel Per 8 Channels Per Module
No Short Condition(1) 0.5A 4A 6A
One Short Condition(1) 0.5A 3A 6A
Two Short Condition(1) 0.5A 1.5A 6A
Galvanic Isolation 1500 VAC RMS or ±1500 VDC
.
