ATIM ACW/LW8-MR1 Manuale d'uso - Pagina 10

Sfoglia online o scarica il pdf Manuale d'uso per Strumenti di misura ATIM ACW/LW8-MR1. ATIM ACW/LW8-MR1 17. Metering / state of dry contacts

Operation

a. Input 1: pulse counter

The ACW-MR1 has a metering input that can be connected to a dry contact or open collector type pulse emitter for

remote meter reading, and a dry contact input indicating an ON/OFF status.

Two modes of use are proposed:

1. Standard Meter reading

The sensor increments an index with each received pulse. Periodically (e.g. once an hour or once a day), it

transmits the index to the radio network.

2. Eco Meter Reading

The sensor increments an index with each received pulse. Periodically (for example every 10 minutes), it

memorizes the value of the index. When it has stored 6 values, it transmits them in a single frame to the radio

network.

NOTE

The index value is regularly saved in non-volatile memory to not being lost in case of power loss (for example when batteries

are empty). However, when a power loss is happening, the pulses received during the previous 10 minutes may be lost (in

addition to the pulses received during the power loss).

b. Output copy of the pulse in Mirror mode

The ACW-MR1 is equipped with an output to copy the pulse input. This makes it possible to be easily inserted

in an existing installation where there is already a pulse transmitter. In this case, the ACW-MR1 is inserted between

the meter and the pulse emitter.

The output terminals are called OUT1- and OUT1+ (galvanically isolated MOSFET dry contact).

c. Input 2: dry contact – detection of change of state

This input can be connected to a dry contact for change of state detection, in on-off mode. By default, if the sensor

detects a change of state on this input, it transmits an alert frame.

d. Input Optical head

The card is equipped with a phototransistor that detects the light pulses from the optical fiber if it is connected to

the cable gland (ACW-MR1/OPTO mode).

ATIM_ACW-MR1_UG_EN_V1.6