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TME 400-VMF
In addition to the features of the TME 400 VM, this version can be used for custody-
transfer applications.
1.3.3
Firmware
The currently delivered devices have either firmware version 1.12 or 11.12 installed,
depending on the components used in the index head. With the devices of the type
TME 400-VM(F) there is no functional difference between the two versions. The in-
stalled version is shown in coordinate G02.
1.3.4
Power supply
Battery-operated device
The TME 400 is equipped with a replaceable 3.6 V lithium battery. The device is de-
signed for continuous operation for approximately 10 years. To achieve this, the de-
vices may be operated for a maximum of 15 minutes per day with input pulses of 1 Hz.
Since the battery in the device is supplied with an insulating strip (positive pole
protection), this strip must be removed before commissioning!
Battery-operated device with additional external power supply
An electric supply of the TME 400 via the 4-20mA current loop reduces the power
consumption from the batterie and typically extends the service life of the battery to
more than 12 years.
If the TME 400 is additionally electrical powered by the RS485 interface, the service
life of the battery is typically extended to clearly more than 12 years.
Battery replacement indicator
The remaining battery life is determined by means of an internal calculation. An indi-
cator in the display appears when it is time to replace the battery. Battery replace-
ment is described in chapter 3.1.4 Battery replacement. In parameter G20 Date of
last battery change the date of the last battery change is displayed (see chapter 4.3.3
Coordinates in context).
Note
In case of a loss of the external power supply, the TME 400 is supplied by the
buffer battery. The battery symbol is blinking in this case.
Manual TME400-VMF · EN11 · January 22nd, 2024
1 Introduction
17
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