XIF File Additional
Model 2200: 2-Channel Pulse Count Input Network Node
Model 2200 is a Pulse Count Input Network Node that is housed in a compact DIN
rail enclosure. It allows
integration of up to 2 digital pulse inputs into the LonWorks distributed
digital network. Input devices such
as relays, conditioned proximity sensors, conditioned capacitive sensors as well
as ultrasonic sensors are all supported.
Model 2200 has a flexible front-end that supports direct wiring of NPN, PNP, TTL,
as well as dry-contact type inputs. Pull-up
resistor, pull-down resistor, threshold voltage, hysterisis voltage, and signal
inversion can all be changed via configuration network variables.
There are no jumpers to set.
the flexible hardware front-end is a very flexible firmware layer.
The firmware simultaneously calculates the accumulated pulse count,
frequency, and, for steady state signals, allows the discrete digital state to
be read. The frequency measurement
rate is in excess of 65 KHz and the accumulated pulse count can be up to
2,147,483,648. The pulse
accumulator can be scaled in such a way as to allow multiple pulses to be
counted as a single event. The
frequency input can be averaged over multiple samples.
Finally, to allow a smooth interface with LonWorks devices, the frequency
and count data is also available as a percentage of a user-configurable range.
the Model 2200 allows multiple sensors to be used over a simple four-wire bus
installation. Two wires are used
for power, the other are used for digital communication.
The communication interface is the FTT-10 transceiver.
connections to the Model 2200 are made via high quality removable terminal
blocks. Power into the Model 2200
is reverse voltage protected, individually fused, and finally made available to
the sensor terminal blocks. This
feature allows simple power distribution to each pulse output device.
pulse count inputs with a 0-36 VDC input range
interpretation of each input as frequency, pulse-count accumulator, or
measurement range is 0 to 65 KHz. Frequency
measurement can be averaged over multiple samples
pulse accumulator has a capacity of 2,147,483,648 counts.
Pulse input can be scaled
pull-up and pull-down circuit on each input
and hysterisis voltages for each input can be setup by user via the network
design. All configuration
parameters are done via communication network
power is distributed to each sensor’s terminal block to cut down on
power to each sensor is reverse voltage protected and fused
DIN Rail mount enclosure that is only 36 mm (1.42”) W x 90 mm (3.54”) L
x 58 mm (2.28”) H
data is available using Standard Network Variables (SNVT)