Emerson MultiFlex ESR, Инструкция по установке и эксплуатации, Страница: 11 / 21

Programming E2 Version 2.21 and Above Software Overview • 6
ECT Flow valves. The valve may be configured
to go to this position during periods of control
failure. The Valve Daily Average Position is
determined by averaging the position of the
valve only during the refrigeration state. While
in Defrost or other circuit states, the average
position will not be updated. At midnight of each
new day, the Valve Daily Average Position is
updated to reflect the average position calculated
throughout the previous day. In addition, if a
communication failure occurs, the valve will be
instructed to go to a different failsafe position
(Comm Fail EEPR %) or for ECT Flow valves,
the Valve Daily Average Position may be used.
Lead Circuit
When a MultiFlex ESR circuit is defined as the
lead circuit in its associated Suction Group and
suction float has been enabled, the Standard Cir-
cuit will suspend normal PID control of the
valve while in the refrigeration state. Instead, the
Standard Circuit will force the valve to full open.
By doing this, the associated Suction Group will
be able to float the suction setpoint to the highest
possible value, while still maintaining the circuit
temperature setpoint.
Valve Alarms
When a Standard Circuit is associated with a
MultiFlex ESR valve, it also processes alarms
associated with that valve, including Stuck
Valve, Fault Wire, and Fault Overload. Stuck
Valve and Fault Wire are only ECT Flow valve
alarms.
6.1. Programming E2 Version 2.21
and Above
Successful installation of a MultiFlex ESR
requires you to perform five main programming
steps in the E2 software:
1. Add MultiFlex ESR Board(s) - The E2 refriger-
ation controller must be programmed to commu-
nicate and utilize the MultiFlex ESR board(s) on
the network.
2. Add Standard Circuit(s) - The circuit must first
be added in the E2 before a circuit can be set up
and associated with the MultiFlex ESR board.
3. Associate MultiFlex ESR - Assign the Multi-
Flex ESR to standard circuit(s) so the valve on
the board is associated or "mapped" to a circuit,
which will enable valve control. The association
creates auto hookup of circuit valve control and
alarm parameters between the circuit and the
MultiFlex ESR application. This association
should be completed prior to
Step 4 - Standard
Circuit Setup to minimize the set up of standard
circuit(s) for MultiFlex ESR.
4. Standard Circuit Setup - A Standard Circuit
application must be set up as normal, (with all
case types, setpoints, and other parameters
defined)
except the Temperature Control Strat-
egy; the Temperature Control Strategy must be
set up as
LINE UP(MFLEXESR)/DEF .
5. MultiFlex ESR Setup - Physical properties of
the valves connected to the MultiFlex ESR will
need to be specified in the MultiFlex ESR appli-
cation in the E2 software.
6.2. Step 1: Add a MultiFlex ESR
A. Add Number of Boards
A MultiFlex ESR board must be added to the E2
in the same manner that an 8RO or a 16AI is
added in the network setup of the controller. This
is done from the Connected I/O screen of the E2
(Figure 6-1) :
1. Press

Figure 6-1 - Connected I/O Screen