Danfoss PLUS+1 DP570 Series, Technical Information

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Multifunction
Low range frequency input PPU
Description Minimum Typical Maximum Comment
Minimum discernible
voltage
0 mV — 12.9 mV —
Maximum discernible
voltage
377 mV 404 mV 431 mV —
Precision — — 0.149 mV —
Worst case error — — 27 mV Over the full
temperature range
-30º C to +60º C (-22º
F to +140º F)
Rising voltage
threshold
0.11 V — 0.30 V Voltage required for
frequency input to
read high
Falling voltage
threshold
0.04 V — 0.22 V Voltage required for
frequency input to
read low
Input impedance 230 kΩ 233 kΩ 236 kΩ No pull up or pull
down
Input impedance 13.9 kΩ 14.1 kΩ 14.3 kΩ Pull up to +5V or pull
down to ground
Input impedance 7.2 kΩ 7.3 kΩ 7.4 kΩ Pull to +2.5V
Middle range frequency input PPU
Description Minimum Typical Maximum Comment
Minimum discernible
voltage
0 mV — 20 mV —
Maximum discernible
voltage
5.62 V 5.75 V 5.88 V —
Precision — — 2.14 mV —
Worst case error — — 130 mV Over the full
temperature range
-30º C to +60º C (-22º
F to +140º F)
Rising voltage
threshold
0.178 V — 3.92 V Voltage required for
frequency input to
read high
Falling voltage
threshold
0.84 V — 2.79 V Voltage required for
frequency input to
read low
Input impedance 230 kΩ 233 kΩ 236 kΩ No pull up or pull
down
Input impedance 13.9 kΩ 14.1 kΩ 14.3 kΩ Pull up to +5V or pull
down to ground
Input impedance 7.2 kΩ 7.3 kΩ 7.4 kΩ Pull to +2.5V
High range frequency input PPU
Description Minimum Typical Maximum Comment
Minimum discernible
voltage
0 mV — 130 mV —
Maximum discernible
voltage
34.704 V 36 V 37.296 V —
Precision — — 14.3 mV —
Technical Information
DP570 Series Displays
Inputs/outputs
12 | © Danfoss | January 2017 L1328765 | BC00000231en-US0701