DO 24 VDC high-side CHARM specifications

Installation notes

This CHARM can use the CHARM Relay Output Terminal Block and the CHARM Terminal Block.
This CHARM has short circuit protection and supports line monitoring for sensing field wiring faults such as open and short circuits. Line monitoring is enabled in the configuration.
Note
Line fault detection is not compatible with significant capacitive loading (cable + load > 30 nF) and must be disabled under these conditions.
This CHARM can be configured for momentary output or continuous pulse output.

Table: DO 24 VDC high-side CHARM specifications
Item	Specification
Channel type	Discrete output: 24 VDC high-side
Configuration options	Momentary output Continuous pulse output Line fault testing
On-state output rating	24 VDC nominal at 100 mA Channel power is derived from +24 VDC (± 10%) power supplied to CHARM I/O card.
On-state current limiting, channel protection	Output continuous current: short circuit protected to 200 mA typical
Off-state leakage current	1 mA maximum
Line fault detection levels	Guaranteed short circuit: <50 Ω load Guaranteed good status: 240 Ω to 10 kΩ load Guaranteed open circuit: >20 kΩ load
Line fault test timing	200 µsec
Input power requirements	Total power requirement with CHARM Terminal Block: +24 VDC ±10% at 116 mA maximum : Input power from CIOC: +6.3 VDC ±3% at 32 mA maximum +24 VDC input power: +24 VDC ±10% at 5 mA maximum plus output channel current Total power requirement with CHARM Relay Output Terminal Block: +24 VDC ±10% at 24 mA maximum: Input power from CIOC: +6.3 VDC ±3% at 32 mA maximum +24 VDC input power: +24 VDC ±10% at 12 mA maximum
CHARM heat dissipation	0.44 W with CHARM Terminal Block 0.61 W with CHARM Relay Output Terminal Block

Figure: DO 24 VDC high-side CHARM wiring diagram with CHARM Terminal Block

Figure: DO 24 VDC high-side CHARM wiring diagram with CHARM Relay Output Terminal Block