In virtually all configurations, the C300 controller and Series C I/O provides useful, maintainable process equipment connections in a smaller footprint than existing competitors and Honeywell equivalent products. Installing Series C I/O modules contributes to overall total installed cost savings.
Brand:HONEYWELL Model number:TC809B1008
Colour:new Warranty: 12 months
Lead Time:3-day working day Country of origin: USA
Price: Please contact us Product weight:0.22kg
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TC809B1008 Honeywell Central control module Brand new
ATTENTION
In redundant PIM modules, after a switchover, if the alarm for the reported channel still
persists on the new primary, this most likely indicates a problem in the field wiring.
6.2 Field device output stage types
The output stage of most field sensors use an open collector bipolar transistor or an open drain
MOSFET to produce a pulse for counting by a metering device. Open collector and open drain
transistors require an externally supplied pull-up resistor and a source of dc power for transistor
action to take place. Other types of sensor outputs may incorporate a push-pull, totem pole (for
example TTL), or differential output stage which delivers fast rise/fall time pulses without the need
of a pull-up resistor. Although not as common, some field sensors contain an open emitter or open
source transistor for the output stage. This type requires an externally supplied pull-down resistor.
PIM has been designed to operate with all of these types. This section provides information on the
specific type and provide guidelines on the connectivity of each.
Figure 6.2 Field device output stage types
ATTENTION
Millivolt signals are not counted by the PIM unless a suitable preamplifier is used to boost
the signal to a level that can be detected by the PIM circuitry.
6.3 PIM resistor bias terminal blocks
The PIM IOTA provides eight terminal blocks (one for each channel) that enable the user to install
the appropriate bias resistor for proper operation with the field device.
l Pull-up (open collector or open drain output stage)
l Pull-down (open emitter or open source output stage)
l No bias (Active drive - differential, Transistor-Transistor Logic (TTL), and so on)
The following figure displays the channel 1 RES BIAS terminal block.
.
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