Instructions for Use
– SCHMIDT
®
LED Measured Value Display MD 10.015
Page 7
Operating voltage
For proper operation, the
MD 10.015
requires depending of its version:
Material No. 527330:
85 … 250 VAC / 50 … 60 Hz
Material No. 528250:
2
3 … 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 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 tol-
erance is type depending:
Material No. 527330:
𝑈
𝑆𝑒𝑛𝑠𝑜𝑟
= 24 𝑉 ± 15 %
Material No. 528250
2
:
𝑈
𝑆𝑒𝑛𝑠𝑜𝑟
= 𝑈
𝑂𝑝𝑒𝑟𝑎𝑡𝑖𝑛𝑔_𝐷𝑖𝑠𝑝𝑙𝑎𝑦
− (1.2 𝑉 + 25 Ω ∙ 𝐼
𝑆𝑒𝑛𝑠𝑜𝑟
)
The load current I
Sensor
is limited to 160 mA.
Analog inputs
The jumpers in the housing cover set the analog inputs of the display to
the desired signal mode (current or voltage).
If the bridge is placed on the left contact pins (
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 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
.
!
