Risco ProSYS Plus - Defining Zone Termination Resistance Using the Resistance Option

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2017 Page 67 5IN2413 B
Defining Zone Termination Resistance using the “Resistance” Option
Regardless of which method was used to define zone parameters (One-by-One, or
By Category), if you had specified zone termination in the Termination parameter
(relevant for wired zones only), you have only specified what type of termination
configuration to apply for the wired zone – EOL, DEOL, TEOL, NC, or NO. In the
Resistance option, you now define the termination resistance value(s) for the
wired zone.
If using a zone expander (16-zone, 8-zone, single-zone), in addition to defining the
termination resistance for all the relay detectors connected to it – which can be any
combination of EOL, DEOL, TEOL detectors – you also need to define the
termination resistance compatibility for the zone expander itself, according to the
“highest” EOL level of any relay detector you intend to connect to it. For example, if
you have EOL, DEOL and TEOL detectors connected to the zone expander (or if you
have only EOL and DEOL detectors, but you want to leave open the possibility of
adding a TEOL detector to the zone expander in the future), you will need to set the
zone expander’s termination resistance values to TEOL – the “highest” level.
Default termination resistance values for RISCO relay detectors are:
• EOL (end-of-line): 2.2K Ω
• DEOL (double end-of-line): 2.2K Ω, 2.2K Ω
• TEOL (triple end-of-line): 4.7K Ω, 6.8K Ω, 12K Ω
NOTE: For retrofit installations, you can define the resistance compatibility
according to the resistors already installed in the relay detectors.
 To define zone termination resistance values:
1. At Programming menu go to: 2  1  3 (ZonesParametersResistance)
2. Scroll to the detector-compatible termination resistance option, then press OK.
Zone Termination Resistance Values (in Ohms)
EOL DEOL TEOL EOL DEOL EOL DEOL
00 Custom 05 3.74K 6.98K 10 3.3K 3.3K
01 2.2K
(default)
2.2K,
2.2K
(default)
06 2.7K 2.7K 11 5.6K 5.6K
02 4.7K 6.8K 4.7K,
6.8K,
12K,
(default)
07 4.7K 4.7K 12 2.2K 1.1K
03 6.8K 2.2K 08 3.3K 3.3K 13 2.2K 4.7K
04 10K 10K 09 1K 1K