Metacentre CX Box
Page 33
The fan minimum run time function is
intended to limit the number of fan motor starts
per hour. For example: if the starts-per-hour
limit for a fan motor is 20; set the minimum fan
run time to 180 seconds.
Fn:DR (Drain):
The drain output will become active when the
i-PCB ‘Load’ output is active. The drain output
will remain de-activated in all other conditions.
When active, the drain output will continuously
cycle between the set drain open time (S02-
DO) and the set drain interval time (S02-DI).
The drain output will activate during the drain
open time period. Each time the ‘Load’
condition becomes active the drain output will
begin to cycle starting with the set drain open
time.
The drain output function is intended for
condensate drain solenoid valve automation.
Fn:HE (Heater):
The heater output function is active at all times
except for a compressor ‘Not Available’
condition.
The heater output will activate when
temperature ‘T01’ decreases below the set
heater control temperature (S02-HT) and will
de-activate when temperature rises above the
set heater control tempe2
o
C.
The heater output function is intended for
temperature control automation of cabinet,
enclosure or sump heater devices.
T01/06 – Temperature Input Configuration:
T01
01 TE
1
02 HF
110.0
03 LF
o
C
1.0
05 AM
KTY
o
C
TE
Enable
= Disable: No sensor connected
= Enable Temperature Detection
When enabled the detected temperature is
displayed as a menu item in the normal
operational display ‘User’ menu.
If a sensor fault (out-of-range) occurs the
‘User’ menu display will show “- - -“ (dashes)
and the set ‘Fault’ type will be generated. If
‘No Fault’ is set, no sensor error is generated.
HF
High
Fault
Level
Fault generated if temperature
exceeds this setting
LF
Low
Fault
Level
Fault generated if temperature falls
below this setting
FT
Fault
Type:
“
-
“ No
Fault
A
Alarm
(Warning)
T
Trip (Shutdown)
A01/A04 – Analogue Input Configuration:
A01
01 TE
1
02 ST
4MA
03 UT
o
C
10 DT
10 sec
TE
Enable
= Disable: No sensor connected
= Enable 0mA/4mA to 20mA Detection
When enabled the detected value, in
accordance with the ‘Display’ value settings, is
displayed as a menu item in the normal
operational display ‘User’ menu.
ST
Signal
Type
The minimum ‘mA’ signal value:
0mA
or
4mA
If set for ‘0mA’ an (out-of-range) sensor
fault cannot be detected for ‘open circuit’ or ‘no
signal’ conditions.
If a sensor fault (out-of-range) occurs the
‘User’ menu display will show “- - -“ (dashes)
and the set ‘Fault’ type will be generated. If
‘No Fault’ is set, no sensor error is generated.
