Fridgewatch 2100 Controller Mk4
Section 3
Publication 3-58
Issue 1.1 : 01/08
Page 109 of 152
For example, given a three compressor package unit, if S73 = 2, at most
2 compressors can be run simultaneously. Fridgewatch 2100 will
indicate maximum load when 2 compressors are at maximum load, the
standby (third) compressor will only run when either the lead or lag
compressor is tripped, unavailable or waiting.
S74 Third party communications address
Note: USED FOR SPECIAL APPLICATIONS ONLY.
This setting does not define the operation of the compressor but is used
as information only, passed onto the Monitoring and Alarm Interface
Device (MAID), or other monitoring system on the Fridgewatch Highway,
and is designed to be used as the address at which the MAID replies on
behalf of the Fridgewatch 2100 Controller.
S75 to S80 Current date and time
Settings S75 to S80 and S81 permit the Fridgewatch 2100 Controller
internal clock to be updated; refer to Table 15. The current date and time
can be displayed from the Information Page
→
Date-Time.
S
ETTING
U
NITS
V
ALUES
S75
Day of the week
Weekday as a
numerical value
0 = Sunday
3 = Wednesday
6 = Saturday
1 = Monday
4 = Thursday
2 = Tuesday
5 = Friday
S76
Day of the month
Day of the month as a
numerical value
1 to 31.
S77 Month
Calendar month as a
numeric value
1 = January
5 = May
9 = September
2 = February
6 = June
10 = October
3 = March
7 = July
11 = November
4 = April
8 = August
12 = December
S78 Year
Year
Only the last two digits of the year are entered. For example,
2000 would be entered as 00, year 2007 as 07.
S79
Hour
Hour
24 hour clock.
S80 Minute
Minute
1
to
59.
Table 15 Values for S75 to S80 Current Date and Time
S81 Update internal clock
This setting is used to initiate an update to the Fridgewatch 2100
Controller internal clock. Set S81 to 0, Fridgewatch ignores clock
settings S75 to S80. the default value is 0.
Set S81 to 1, Fridgewatch 2100 updates the clock to new values.
Updating the internal clock, should it be necessary, must be done last of
all, i.e. immediately before ending a configuration session. For example,
if there is a delay of say 10 minutes after setting the minutes value (S80)
before ending the configuration session, the system clock will be 10
minutes slow. Also, as 0 is the default value for S81, before ending the
configuration session by turning the Supervisor Key back to the Locked
position, the operator must change S81 to 1 for any date/time changes to
be effective.
In practice, to change the date and/or time, adopt the following
procedure. If necessary, refer to 9.6. Changing Configuration Settings
after Commissioning.
