Onicon System-10 BTU Meter User Manual

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System-10-LON Network Interface Installation Guide 07/13 - 0654-4 / 16751 Page 7
1.4.2 Optional Network Interface With Isolated Digital Pulse Input (Di3)
The System-10 BTU Meter can be provided with an auxiliary pulse input for totalizing
pulse outputs from external devices such as water or gas meters. Pulses are accumulated
in an internal register, and the totalized value is available on the network. This register
can be zeroed via the network. The maximum register total is 9,999,999. The register will
rollover to zero when this value is exceeded.
If the auxiliary pulse input option was ordered at the same time the Btu meter was
ordered, it will arrive fully congured and ready to use. If it was ordered after the Btu
meter was delivered and is being installed as a eld upgrade, it may be necessary to
congure the pulse input. The information is required to congure the input provided
below and on the following pages:
The input pulse must meet the following criteria:
1. Frequency input range, 50 Hz maximum
2. 10 millisecond minimum pulse duration
Input Pulse Denition:
In order to congure the communications card auxiliary pulse input, you must rst
determine which type of pulse your meter produces. The allowable types of input
pulses are described on the following pages. Based on the type of pulse, set the selector
switch (S1) on the communications circuit board (Fig. 1) to the correct setting.
Fig. 1
AUX PULSE INPUT (Di3)
CONNECTOR (T2)

Onicon System-10 BTU Meter Specifications

General

Brand	Onicon
Model	System-10 BTU Meter
Category	Measuring Instruments
Language	English