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Watlow D4T Data Logger
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204
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Chapter 6 Appendix
1 Digital Input
• Digital input update rate 10Hz
-
DC voltage
- Max. input 36V @ 3mA
- Min. high state 3V at 0.25mA
- Max. low state 2V
-
Dry contact
- Min. open resistance 10KΩ
- Max. closed resistance 50Ω
- Max. short circuit 13mA
Switched DC Output
• Switched dc = 22 to 32V
Î
(dc) @ 30mA per output, 40mA per pair (option CC)
Open Collector Output
• Switched dc/open collector = 30V
Î
(dc) max. @ 100mA max. current sink
Solid-State Relay Output
• Form A, 1A at 50°F (10°C) to 0.5A at 149°F (65°C), 0.5A at 24V
Å
(ac) min., 264V
Å
(ac) max., opto-isolated, without contact suppression
Form A Electromechanical Relay Output
• 5A, 24 to 240V
Å
(ac) or 30V
Î
(dc) max., resistive load, 100,000 cycles at rated load,
requires a min. load of 20mA at 24V, 125VA pilot duty
Form C Electromechanical Relay Output
• 5A, 24 to 240V
Å
(ac) or 30V
Î
(dc) max., resistive load, 100,000 cycles at rated load,
requires a min. load of 20mA at 24V, 125VA pilot duty
1 Universal Process/Retransmit Output
• Universal process/retransmit, Output range selectable:
- 0 to 10V
Î
(dc) into a min. 4,000Ω load
- 0 to 20mA into max. 800Ω load
Resolution
- dc ranges: 2.5mV nominal resolution
- mA ranges: 5 µA nominal resolution
Calibration Accuracy
- dc ranges: ±15 mV
- mA ranges: ±30 µA
Temperature Stability
- 100 ppm/°C