Table of Contents
Advertisement
NTC = signal from NTC temperature probe;
— To enable the U3 multifunction input, it is required to operate on the digital
input ID14. It is possible to choose the state with which to enable use of the
multifunctional input:
CLOSED = if ID14 is closed the U3 input open;
OPEN = if ID14 is open the U3 input enabled;
9.17 SETS SIGNAL MANAGEMENT LOGIC FOR
MULTIFUNCTION INPUT
A
B
C
1. Indicates the function selected for the multifunction input. This function can
be:
NONE = multifunction input not used;
POWER LIMIT = based on the signal applied to the analogue input, a value will be
established to be applied to the power request limit by the system;
POWER REQUEST = based on the signal applied to the analogue input, the power
request that the unit must meet will be established;
SETPOINT = based on the signal applied to the analogue input, the value of the
setpoint to be applied to the unit will be established;
2. Indicates the current percentage value that will be applied to the assigned
function based on the signal applied to the analog input
A. Sets (depending on the type of signal chosen on the previous page) the per-
centage value to be assigned to the function (1) if the signal at the multifunc-
tion input will have the value (D)
B. Sets (depending on the type of signal chosen on the previous page) the per-
centage value to be assigned to the function (1) if the signal at the multifunc-
tion input will have the value (C)
C - D: These fields will only be editable if, on the previous page, an NTC signal has
been selected as input type. In this case the two extreme temperature values within
which the selected function must be modulated must be specified
9.18 SET UNIT OF MEASUREMENT FOR THE SYSTEM
— Selects the type of unit of measurement to be used. The choices available are:
°C/bar;
°F/psi;
ATTENTION: to change the units of measurement the unit must be off (for
example "Off from display")
— Indicates the current working setpoint value with relative unit of measure
D
9.19 ENABLE LOW LOAD FUNCTION
— Enables/disables the low load function
— Auto restart: Sets the low load outlet temperature value
— Forcing off: Sets the forcing value of the compressor switch-off
— The graph indicates the low load function values
In the case of low load active and compressor on, the message "Low load" will ap-
pear; in the case of low load active and compressor off, the message "Low load:
auto restart" will appear.
23
Advertisement
Table of Contents
