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DR4300 Circular Chart Recorder
DR4300 Circular Chart Recorder Product Manual 12/03
14
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
(Supply common with
current output)
+24 Vdc source for external dry contacts or isolated solid state contacts for either
of the two inputs.
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