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-Pulse 1: HF output negative potential
+Pulse 1: HF output positive potential
At this output, the arriving pulses at pulse input 1 are synchronously with a pulse
width of 1 ms.
-Pulse 2: LF output negative potential
+Pulse 2: LF output positive potential
Output pulses are output at these terminals depending on the change in the volume
flow rate. The pulse output factor can be used to weight the number of output pulses
in relation to the increase in volume.
For the device types TME 400-VC and TME 400-VCF, the dependence of the pulse
output on the standard volume can also be selected (see coordinates A11 and A21).
In coordinate A23 the possible pulse width can be 20ms, 125ms or 250ms.
A pressure sensor can be connected to the four connections of terminal block X8:
"+Up" positive and "-Up" negative voltage supply for pressure sensor; "RX" or "TX"
are the serial data received from the pressure sensor or sent to the pressure sensor.
The temperature sensor, a Pt1000, is connected to the terminals of terminal block
X11 in two-wire connection. Pressure and temperature sensors are generally only in
use with the TME 400-VC and TME 400-VCF versions.
The terminals of the terminal block X10 are connections for an optional module
which is not yet supported by the firmware.
Use the wire end ferrules for the connecting cable and route them in from below; a
seal holds the cable. To be able to pull a cable out again, press the small white
square (marked with the X) down using a small screwdriver (at the bottom in
Figure 4: Electronics with cover of the calibration button and Figure 5: Connection as-
signment of the TME 400; top of the plug strip) in order to open the locking device.
Hold down the square and pull the cable out of the connector strip.
Some connection examples are given on the following pages. Anyhow, please check
for further connections the data and limitations of the connected devices in the docu-
mentations of these devices.
Caution
The TME 400 and connected devices do not have any plugs that have a
to prevent polarity reversal.
Pay careful attention to the correct connections!
Manual TME400-VMF · EN11 · January 22nd, 2024
2 Installation
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