ABB SensyMaster FMT430 - Page 60

60 SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B
… 7 Electrical connections
… Electrical data for inputs and outputs
Current output V1 / V2, V3 / V4 (plug-in module)
Up to two additional plug-in modules can be implemented via
the ‘Passive current output (red)’ option module.
Can be configured for outputting mass flow, volume flow,
density and temperature via on-site software.
A
Current output V1 / V2, passive
B
Current output V3 / V4, passive
Figure 48: (I = internal, E = external, R
B
= load)
The plug-in module can be used in slot OC1 and OC2.
Permissible source voltage U
q
for passive outputs in relation to load
resistance R
B
where Imax = 22 mA.

= Permissible range
Figure 49: Source voltage for passive outputs
Passive current output
Terminals
V1
/ V2, V3 / V4
Output signal
4 to 20 mA
Load R
B
250
Ω ≤ R
B
≤ 600 Ω
Source voltage U
q
*
13 V ≤ U
q
≤ 30 V
Measuring error
<
0.1 % of measured value
Resolution
0.4 µA per digit
* The source voltage U
q
is dependent of the load R
B
and must be placed in
an additional area.
Digital output V1 / V2, V3 / V4 (plug-in module)
An additional binary output can be implemented via the ‘Passive
digital output (green)’ plug-in module.
Can be configured as an output for flow direction signaling,
alarm output etc. via on-site software.
Figure 50: Plug-in card as binary output (I = internal, E = external, R
B
= load)
The plug-in module can be used in slot OC1 or OC2.
Binary output (passive)
Terminals
V1 / V2, V3 / V4
Output ‘closed’
0
V ≤ U
CEL
≤ 3 V
2
mA < I
CEL
< 30 mA
Output ‘open’
16
V ≤ U
CEH
≤ 30 V DC
0 mA ≤ I
CEH
≤ 0.2 mA
Switching function
Can be configured using software.
Menu: Input/Output on page 113