Instructions for Use
– SCHMIDT
®
LED Measured Value Display MD 10.010
Page 7
Operating voltage
For proper operation, the
MD 10.010
requires depending of its version:
Material No. 527320:
85 … 250 VAC / 50 … 60 Hz
Material No. 528240:
23
… 29 VDC
Only operate the measured value display within the defined op-
erating voltage range and type.
The product can be destroyed; in worst case,
life is in danger
.
Supply voltage for sensor
The measurement display provides a voltage source for the supply of a
sensor (or even several sensors). The supplied voltage U
Sensor
is nominal
24 VDC, its tolerance is type depending:
Material No. 527320:
𝑈
𝑆𝑒𝑛𝑠𝑜𝑟
= 24 𝑉 ± 15 %
Material No. 528240
2
:
𝑈
𝑆𝑒𝑛𝑠𝑜𝑟
= 𝑈
𝑂𝑝𝑒𝑟𝑎𝑡𝑖𝑛𝑔_𝐷𝑖𝑠𝑝𝑙𝑎𝑦
− (1.2 𝑉 + 25 Ω ∙ 𝐼
𝑆𝑒𝑛𝑠𝑜𝑟
)
The load current I
Sensor
is limited to 160 mA.
Analog input
The jumper in the housing cover (see Figure 3) selects the signal charac-
teristic (mode) of the analog input of the display (current or voltage).
If the bridge is placed on the left contact pin pair (
Voltage
) a voltage signal
is expected. If the plug connects the right pair of pins (
Current
), a current
signal must be active.
Figure 3: Jumper in housing cover for selecting input signal mode
The input resistance is mode dependent:
Current mode:
R
IN
= 200
Voltage mode:
R
IN
= 12.5 k
2
Supply voltage of display is connected through, with a series diode & resistance of 25
.
