DI 24 VDC isolated CHARM specifications

Installation notes

When a CHARM Terminal Block is used, the input channel can be used as a conventional isolated input channel.
When a CHARM 3-Wire DI Fused Injected Power Terminal Block is used, the input channel can be used as a dry contact input channel.
The CHARM 3-Wire DI Fused Injected Power Terminal Block can be used to provide an additional connection point for 2 and 3-wire devices connected to this CHARM.
This CHARM can be configured as a pulse count input channel.

Table: DI 24 VDC isolated CHARM specifications
Item	Specification
Channel type	Discrete input: isolated VDC
Detection level for ON	>10 VDC
Detection level for OFF	< 5 VDC
Wetting current	6 mA at +24 VDC
Input impedance	4 kΩ (approximate)
Channel isolation	Input is optically isolated and factory tested to 1000 VDC.
Optional pulse count input frequency range	0.1 Hz to 10 kHz with 50 µsec minimum pulse width
Input power requirements	Total power requirement: +24 VDC ±10% at 12 mA maximum : Input power from CIOC: +6.3 VDC ±3% at 32 mA maximum +24 VDC input power: none
CHARM heat dissipation	0.32 W

Figure: DI 24 VDC isolated CHARM wiring diagram with CHARM Terminal Block

Figure: DI 24 VDC isolated CHARM wiring diagram for dry contact applications with CHARM Terminal Block

Figure: DI 24 VDC isolated CHARM wiring diagram for dry contact applications with CHARM 3-Wire DI Fused Injected Power Terminal Block

Figure: DI 24 VDC isolated CHARM wiring diagram for 2-wire applications with CHARM 3-Wire DI Fused Injected Power Terminal Block

Figure: DI 24 VDC isolated CHARM wiring diagram for 3-wire applications with CHARM 3-Wire DI Fused Injected Power Terminal Block