©2025 Copeland LP.
026-1803 R13 Supervisor I&O User Guide 9 - 42
The Flexible Combiner may also be programmed to operate a
digital output as a PWM (pulse width modulation) output. In
this instance, the equation written for a PWM output
determines its period and pulse width. A typical Flexible
Combiner application consists of three types of components:
inputs, equations, and outputs. For more information about
this application, see the Flexible Combiner manual
(P/N 026-1620).
Using Refrigerants in Flex Combiner Equations
When referencing a refrigerant, the Flex Combiner
application will use an abbreviation, which will be the
refrigerant designation such as “R402A” without any hyphen
and a single character suffix added based on the curve used:
• M = Mid-Point
• E = End-point - table follows dew, then bubble with
crossover at 10DC (50DF)
• D = Dew (Vapor) point
• B = Bubble (Liquid) point
To enter a refrigerant in the Flex Combiner algorithm, please
follow the below syntax when entering equation: T2P (AI2,
R438AM).
9.28 RLDS (Refrigerant Leak Detector
System)
The RLDS device detects the presence of gas leaks and
provides for the continuous monitoring of refrigerant gas
levels in up to 16 separate test zones or channels. The system
is programmed to monitor a variety of gases and
independent leak (small), spill (medium), and evacuation
(large) levels may be designated for each zone. The RLDS
also retains a log of previous readings that can be accessed
for analysis. For more information on the RLDS, refer to the
RLDS user manual (P/N 026-1309).
Figure 9-15 - RLDS
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