Danfoss PLUS+1 DP570 Series Technical Information page 13

Technical Information
DP570 Series Displays
Inputs/outputs
© Danfoss | January 2017
High range frequency input PPU (continued)
Description Minimum
Worst case error —
Rising voltage 11.83 V
threshold
Falling voltage 5.61 V
threshold
Input impedance 108 kΩ
Input impedance 13.0 kΩ
Input impedance 6.9 kΩ
Resistance input
Description
Range
Resolution
Source current
*
When configured as a resistance/rheostat/temp sensor input, the device will provide up to 3.76 mA current to an
external load which can then be measured. The equation for calculating AD counts for a given load is: AD counts =
(2338* RL / (RL + 1330)).
Rheostat inputs: AD counts and load relationship
2500
2000
1500
1000
500
0
0 2000
4–20 mA input
Description
Range
Resolution
Typical Maximum
— 1.296 mV
— 26.55 V
— 18.89 V
110 kΩ 112 kΩ
13.2 kΩ 13.4 kΩ
7 kΩ 7.1 kΩ
Unit Minimum Maximum
Ω 0 10000
— — —
mA 0 3.6
4000 6000 8000
Load Resistance Ω ( )
Unit Minimum Maximum
mA 0 54.3
μA 21
Comment
Over the full
temperature range
-30º C to +60º C (-22º
F to +140º F)
Voltage required for
frequency input to
read high
Voltage required for
frequency input to
read low
No pull up or pull
down
Pull up to +5V or pull
down to ground
Pull to +2.5V
Comment
—
—
*
—
AD counts
10000
Comment
—
—
L1328765 | BC00000231en-US0701 | 13
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