Honeywell
• 63
HVAC A
PPLICATION
3.5.17
Group 3.15: Maintenance counters
Three maintenance counters can be programmed and given alarm and fault levels indepen-
dently. The alarm or fault level, or both, can be used.
There are two modes (hours or revolutions). Revolutions are estimated by integrating the Motor
Speed every second and shown in 1000 revolutions on the keypad.
When one of the limits is reached a warning or a fault is triggered and shown on the panel. It
is also possible to send information to a relay that a warning or fault limit has been reached.
Timers are also independently resettable with the reset parameter or a digital input.
Table 51. Maintenance counter parameters
Code
Parameter
Min
Max
Unit
Default
ID
Description
M3.15.1
Counter 1 mode
0
2
0
1104
0 = Not used
1 = Hours
2 = Revs*1000
M3.15.2
Counter 1 alarm limit
0
80000
h/revs
0
1105
Defines when to trig a main-
tenance alarm for Counter 1.
0 = Not used
M3.15.3
Counter 1 fault limit
0
80000
h/revs
0
1106
Defines when to trig a main-
tenance fault for Counter 1.
0 = Not used
M3.15.4
Counter 1 reset
0
1
0
1107
Changing parameter value
from 0 to 1 resets counter.
M3.15.5
Counter 2 mode
0
2
0
1108
0 = Not used
1 = Hours
2 = Revs*1000
M3.15.6
Counter 2 alarm limit
0
80000
h/revs
0
1109
Defines when to trig a main-
tenance alarm for Counter 2.
0 = Not used
M3.15.7
Counter 2 fault limit
0
80000
h/revs
0
1110
Defines when to trig a main-
tenance fault for Counter 2.
0 = Not used
M3.15.8
Counter 2 reset
0
1
0
1111
Changing parameter value
from 0 to 1 resets counter.
M3.15.9
Counter 3 mode
0
2
0
1163
0 = Not used
1 = Hours
2 = Revs*1000
M3.15.10
Counter 3 alarm limit
0
80000
h/revs
0
1164
Defines when to trig a main-
tenance alarm for Counter 3.
0 = Not used
M3.15.11
Counter 3 fault limit
0
80000
h/revs
0
1165
Defines when to trig a main-
tenance fault for Counter 3.
0 = Not used
M3.15.12
Counter 3 reset
0
1
0
1166
Changing parameter value
from 0 to 1 resets counter.
Summary of Contents for SmartVFD HVAC MR4
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