Inputs And Outputs - Grundfos TPE2 D Manual Del Usuario

33. Inputs and outputs

Ground reference (GND)
All voltages refer to GND.
All currents return to GND.
Absolute maximum voltage and current limits
Exceeding the following electrical limits may result in severely
reduced operating reliability and motor life:
Relay 1:
Maximum contact load: 250 VAC, 2 A or 30 VDC, 2 A.
Relay 2:
Maximum contact load: 30 VDC, 2 A.
GENI terminals: -5.5 to 9.0 VDC or less than 25 mADC.
Other input and output terminals: -0.5 to 26 VDC or less than 15
mADC.
Digital inputs, DI
Internal pull-up current greater than 10 mA at V
Internal pull-up to 5 VDC; current less for V
Certain low logic level: V less than 1.5 VDC.
i
Certain high logic level: V greater than 3.0 VDC.
i
Hysteresis: No.
Screened cable: 20-16 AWG (0.5 - 1.5 mm
Maximum cable length: 1640 ft (500 m)
Open-collector digital outputs, OC
Current sinking capability: 75 mADC, no current sourcing.
Load types: Resistive or/and inductive.
Low-state output voltage at 75 mADC: Maximum 1.2 VDC.
Low-state output voltage at 10 mADC: Maximum 0.6 VDC.
Overcurrent protection: Yes.
Screened cable: 20-16 AWG (0.5 - 1.5 mm
Maximum cable length: 1640 ft (500 m)
Analog inputs, AI
Voltage signal ranges:
• 0.5 - 3.5 VDC, AL AU.
• 0-5 VDC, AU.
• 0-10 VDC, AU.
Voltage signal: R greater than 100 kΩ at 77 °F (+25 °C).
i
Leak currents may occur at high operating temperatures.
Keep the source impedance low.
Current signal ranges:
• 0-20 mADC, AU.
• 4-20 mADC, AL AU.
is equal to 292 Ω.
Current signal: R
i
Current overload protection: Yes. Change to voltage signal.
Measurement tolerance: - 0/+ 3 % of full scale (maximum-point
coverage).
Screened cable: 20-16 AWG (0.5 - 1.5 mm
Maximum cable length: 1640 ft (500 m), excl. potentiometer.
Potentiometer connected to +5 V, GND, any AI:
Use maximum 10 kΩ.
Maximum cable length: 328 ft (100 m).
68
Analog output, AO
Current sourcing capability only.
Voltage signal:
•
•
•
Current signal:
•
•
•
Tolerance: - 0/+ 4 % of full scale, maximum-point coverage.
Screened cable: 20-16 AWG (0.5 - 1.5 mm
Maximum cable length: 1640 ft (500 m)
Pt100/1000 inputs, PT
Temperature range:
•
equal to 0 VDC.
i
•
greater than 5 VDC.
i
Measurement tolerance: ± 2.7 °F (1.5 °C).
Measurement resolution: less than 0.54 °F (0.3 °C).
Automatic range detection, Pt100 or Pt1000: Yes.
Sensor fault alarm: Yes.
2
).
Screened cable: 28-16 AWG (0.5 - 1.5 mm
Use Pt100 for short wires.
Use Pt1000 for long wires.
LiqTec sensor inputs
Use Grundfos LiqTec sensor only.
Screened cable: 28-16 AWG (0.5 - 1.5 mm
Grundfos Digital Sensor input and output, GDS*
2
). Use Grundfos Digital Sensor only.
* Not applicable for TPE2, TPE2 D pumps. The built-in sensor for
TPE3, TPE3 D pumps is connected to this input.
Power supplies
+5 V:
•
•
•
+24 V:
•
•
•
Digital outputs, relays
Potential-free changeover contacts.
Minimum contact load when in use: 5 VDC, 10 mA.
Screened cable: 28-12 AWG (0.5 - 2.5 mm
Maximum cable length: 1640 ft (500 m)
2
).
Bus input
Grundfos GENIbus protocol, RS-485.
Screened 3-core cable: 28-16 AWG (0.5 - 1.5 mm
Maximum cable length: 1640 ft (500 m)
Range: 0-10 VDC.
Minimum load between AO and GND: 1 kΩ.
Short-circuit protection: Yes.
Ranges: 0-20 and 4-20 mADC.
Maximum load between AO and GND: 500 Ω.
Open-circuit protection: Yes.
Minimum -50 °C. 80 Ω / 803 Ω.
Maximum .
204 °C. 177 Ω / 1773 Ω
Output voltage: 5 VDC - 5 %/+ 5 %.
Maximum current: 50 mADC, sourcing only.
Overload protection: Yes.
Output voltage: 24 VDC - 5 %/+ 5 %.
Maximum current: 60 mADC, sourcing only.
Overload protection: Yes.
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