LumaSense Technologies IS 50-LO plus - Manual (Page 23)

IS 50-LO plus / IGA 50-LO plus Manual Parameter descriptions / settings 23
range. The stored maximum value will be deleted when the temperature of the new hot object
exceeds the low limit from of the sub range by 1% or at least 2 °C. If a lower limit is not
entered, the maximum value storage will be deleted whenever the lower level of the full
measuring range has been exceeded.
Hold: The function “hold” enables to freeze the current temperature reading at any moment.
For this an external push button or switch has to be connected (see 3.1.1 connector pin J)
which holds the temperature reading as long as the contacts are closed.
Note: In the command structure, the maximum storage comes after the exposure
time. This results in:
clear time the adjusted response time is useless
clear times must be at least 3 times longer than the response time
only maxima with full maximum value can be recorded, which appear at
least 3 times longer than the response time.
5.4 Analog Output
The analog output has to be selected according to the signal input of the
connected instrument (controller, PLC, etc.).
5.5 FROM / TO (beginning and end of sub range)
You have the opportunity to choose a sub range (minimum 51 °C) within the basic measuring
range of the pyrometer. This sub range corresponds to the analog output. “FROM“ describes
the beginning of this measuring range, “TO“ the end of the range.
With a sub range, it is possible to fulfill the requirements of the “auto” clear mode of the
maximum value storage (see above).
5.6 Address
When connecting several pyrometers to one serial interface with RS485, it is
necessary for each instrument to have its own device address for
communication purposes. First, it is necessary to connect each instrument
separately to give it an address. After that, all instruments can be connected
and addressed individually.
Note: Only via own communication program with interface command (not
possible with InfraWin, because InfraWin automatically detects a connected
pyrometer): If parameters should be changed simultaneously on all pyrometers, the
global Address 98 can be used. This allows you to program all pyrometers at the
same time, regardless of the addresses that have already been assigned. If the address
of a pyrometer is unknown, it is possible to communicate with it using the global
Address 99 (connect only one pyrometer).
5.7 Baud rate (kBaud)
The transmission rate of the serial interface in Baud (Bd) is dependent on the
length of the cable. A standard cable length with RS232 for 19200 Bd is 7 m,
with RS485 2 km. The baud rate is reduced by 50% if the transmission
distance is doubled.
5.8 Temperature display in °C or °F
The temperature can be displayed in °C (Celsius) or °F (Fahrenheit).
Settings:
0 to 20 mA
4 to 20 mA
Settings:
00
...
97
Settings:
1.2 kBd
...
115.2 kBd