M
ultiFlame DF-TV7 Page 21 / 56 NOSP16358-03 [04/2016]
4.3. Electric Connection
Never adjust electric connections when detectors are powered. Maintenance must
be undertaken by qualified staff. Observe safety site rules.
MultiFlame DF-TV7 is a sensor with standard current output 4-20mA. The connection can be
on 3 or 4 wires. The 4 wires configuration allows insulation between the signal and power
loops.
In addition, two independent relays outputs can be connected directly to a controller or
signal device.
We recommend using an armoured and shielded cable, type NF M 87 202, in accordance with
the requirements for hazardous areas and NF C 15 100. Other cables can be used if they are
compliant with the local regulations and standards.
The table below shows the maximum cable lengths (2-wires) based on a minimum supply
voltage.
Supply voltage 20VDC, max. cable length in m/ft.* 250/820 400/1310 700/2300
Supply voltage 24VDC, max. cable length in m/ft.* 650/2130 1100/3600
* Those values are indicative ones, for a considered consumption power about 3.5 W
4.3.1. Installation recommendation
This detector version is supplied in an electronic version
Type-C
. The terminal V- is isolated
from the electric ground of the housing
The detector is supplied with a configurable current
output type C (4-20 mA, factory configuration). But it can
be modified in format 0-22 mA by the user, using one of
the menus of the TLU 600.
Example:
DF
-TV7-****-**C-**-***-*-C-*
This electronic Type C also allows the detector to get a
HART output (as an option) superimposed to the output
current. The current output format follows the same
logic as the one described above but the product code
contains an H:
Example:
DF
-TV7-****-**H-**-***-*-C-*
That version also embeds two electrical connectors for the two relays.
To Next Page
Loading...