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High range frequency input PPU (continued)
Description
Minimum
Typical
Maximum
Comment
Worst case error
—
—
1.296 mV
Over the full
temperature range
-30º C to +60º C (-22º
F to +140º F)
Rising voltage
threshold
11.83 V
—
26.55 V
Voltage required for
frequency input to
read high
Falling voltage
threshold
5.61 V
—
18.89 V
Voltage required for
frequency input to
read low
Input impedance
108 kΩ
110 kΩ
112 kΩ
No pull up or pull
down
Input impedance
13.0 kΩ
13.2 kΩ
13.4 kΩ
Pull up to +5V or pull
down to ground
Input impedance
6.9 kΩ
7 kΩ
7.1 kΩ
Pull to +2.5V
Resistance input
Description
Unit
Minimum
Maximum
Comment
Range
Ω
0
10000
—
Resolution
—
—
—
—
Source current
mA
0
3.6
*
—
*
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
0
500
1000
1500
2000
2500
0
2000
4000
6000
8000
10000
A
D
coun
ts
Load
Resistance
(
Ω
)
AD counts
P200167
4–20 mA input
Description
Unit
Minimum
Maximum
Comment
Range
mA
0
54.3
—
Resolution
μA
21
—
Technical Information
DP570 Series Displays
Inputs/outputs
©
Danfoss | January 2017
L1328765 | BC00000231en-US0701 | 13