Model
2200: 2-Channel
Pulse Count Input Network Node
Description
The 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.
The 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, hysteresis voltage, and signal inversion
can all be changed via configuration network variables.
There are no jumpers to set.
Added to 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.
Using 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.
All 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.
Key Features
 |
2-Independent pulse count
inputs with a 0-36 VDC input range |
|
Simultaneous interpretation
of each input as frequency, pulse-count accumulator, or discrete input |
|
Frequency measurement range
is 0 to 65 KHz. Frequency
measurement can be averaged over multiple samples |
|
Internal pulse accumulator
has a capacity of 2,147,483,648 counts.
Pulse input can be scaled |
|
Configurable pull-up and
pull-down circuit on each input |
|
Threshold and
hysteresis voltages for each input can be setup by user via the network |
|
Jumper-less design.
All configuration parameters are done via communication network |
|
Input power is distributed to
each sensor’s terminal block to cut down on external wiring |
|
Output power to each sensor
is reverse voltage protected and fused |
|
Compact DIN Rail mount
enclosure that is only 36 mm (1.42”) W x 90 mm (3.54”) L x 58 mm
(2.28”) H |
|
All data is available using
Standard Network Variables (SNVT)
|
Datasheet
XIF File
Additional Support Files