Honeywell DR4300 Open Collector Output, Modbus Communication, Digital Inputs, Supply common with

DR4300 Circular Chart Recorder

Condition	Specifications
Solid State Relay Output	SPST solid state contacts consisting of a triac NO output.
	Internally socketed.
	Resistive Load: 1.0 A @ 25 °C for 120 Vac or 240 Vac.
	0.5 A @ 55 °C for 120 Vac or 240 Vac.
	Inductive Load: 50 VA @ 120 Vac or 240 Vac.
Open Collector Output	Maximum Sink Current: 20 mA
	Internally powered @ 30 Vdc
	Opto-isolated from all other circuits except current output, but not from each other.
	Socketed jumper assembly replaces relay.
Modbus Communication	Baud Rate: 19,200 maximum, configurable for models with display;
	fixed at 9,600 for models without display
	Protocol: Modbus
	Length of Link: 1,219 m [4,000 ft] maximum
	Link Characteristics: Two-wire, multidrop
Digital Inputs	+24 Vdc source for external dry contacts or isolated solid state contacts for either
(Supply common with	of the two inputs.
current output)	On contact closure the recorder will respond according to how each digital input is
	configured. Opening contact causes return to previous state.
Transmitter Power	24 Vdc with adjustment of ± 6 % (22.6 to 25.4)
	100 mA maximum output

14 DR4300 Circular Chart Recorder Product Manual 12/03