Du line®
Fieldbus
Installationbus
2
Specifications are subject to change without notice (28.09.99)
Dupline® is a registered trademark. A product of the CARLO GAVAZZI Group
FFD 1680
Supply Specifications
General Specifications
Power supply AC types
Overvoltage cat. III (IEC 60664)
Rated operational voltage
through pins A1 & A2 220
230 VAC +6%, -15% (IEC 60038)
120
120 VAC ± 10% (IEC 60038)
024
24 VAC ± 10%
Frequency
45 to 65 Hz
Voltage interruption
≤ 40 ms
Rated operational power
Typ. 2.5 VA
Rated operational
withstand voltage
220
4 kV
120
2.5 kV
024
800 V
Dielectric voltage
Supply - Dupline®
≥ 2 kVAC (rms)
Supply - Count input
≥ 2 kVAC (rms)
Supply - Reset/Disable input
≥ 2 kVAC (rms)
Alternative DC supply
Overvoltage cat. III (IEC 60664)
Supply voltage (VDD in)
through pins 3 & 9
10 to 30 VDC (ripple included)
Ripple
≤ 3 V
Reverse polarity protection
Yes
Rated operational current
≤ 20 mA
Inrush current
≤ 1 A
Rated operational withstand
voltage
800 V
Dielectric voltage
Supply - Dupline®
None
Supply - Count input
None
Supply - Reset/Disable input None
Mode of Operation
Transmitters
with
4-digit
pulse counting function. The
module features reset and
transmission disable inputs.
The accumulated counting
value is transmitted in BCD
representation on the Dupline.
This implies that every digit
uses 4 channels. The-digit-
to-channel allocation is as
follows (example with FFD
1680 and FMK C-D plugged
in):
100 on highest 4 selected
channels (e.g. D5-8).
101 on lower 4 channels of
higher group (e.g. D1-4).
102 on higher 4 channels of
lower group (e.g. C5-8).
103 on lowest 4 selected chan-
nels (e.g. C1-4).
For every digit the most sig-
nificant bit of the BCD equiva-
lent influences the lowest of
the 4 allocated channels.
Activation of the reset func-
tion (pin 3 connected to pin 1)
always resets the internal
counter to 0, irrespective of
the disable and counting in-
puts.
When the transmission dis-
able function is activated (pin
3 connected to pin 5), the
transmitter does not transmit
its value via the Dupline®
whereas the internal counter
can still operate.
A Dupline® system can have
several FFD 1x80s coded to
the same channel groups. In
this case the counting values
may only be emitted from
one transmitter at a time, the
other transmitters must be
disabled in the meantime. This
feature
is best obtained by
using Dupline® receivers with
demultiplex output type D
1230 5111 connected to the
transmission disable inputs.
FK3C 7640 and FL3C 7640
or D 6369 6475 can be used
for display of FFD 1680 va-
lues. FK3C 7760 and FL3C
7760 can be used for display
of FFD 1780 values.
Overflow: When the counter
reaches 9999 (999999), the
transmitter activates all coded
channels, thereby causing
Dupline® displays to become
dark.
Note: If DC-supplied FFD ....
transmitters are used, the
length of the supply bus must
not exceed 3 m in order to
avoid disturbances unbalan-
cing the Dupline®.
Note: Transmitters for nu-
merical signals must not be
used in systems where chan-
nel generators with 2 or 3 se-
quences are installed.
Power ON delay
Undefined,
≤ 1 s
Indication for
Supply ON
LED, green
Environment
Degree of protection
IP 20 B
Pollution degree
3 (IEC 60664)
Operating temperature
-20° to +50°C (-4° to +122°F)
Storage temperature
-50° to +85°C (-58° to +185°F)
Humidity (non-condensing)
20 to 80%
Mechanical resistance
Shock
15 G (11 ms)
Vibration
2 G (6 to 55 Hz)
Dimensions
Material
(see "Technical Information")
D-Housing
Weight
200 g
Approvals
CSA
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
