Camus Hydronics DRH5000 - Variable Frequency Drive (Dr1200 - 5000); Frost Protection

44
Verify activity on COM2 port
> >
COM1: Modbus data between display and SOLA
COM2: Modbus data between display and front end (Modbus)
or Protonode
For more instructions on interfacing with Modbus/ Bacnet/
LonWorks/ Metasys N2 network:
http://www.camus-
hydronics.com/Downloads/93_0238_DynaFlame_DynaForce_
DynaMaxHS_Advantus_Protocol_Setup.pdf
6.6 VARIABLE FREQUENCY DRIVE (DR1200
- 5000)
The variable frequency drive (VFD) has a factory set
security code which has to be entered before any
adjustments can be made. The VFD has 50 parameters,
which can be adjusted. At present only the following are
pertinent:
Table 13: Variable Frequency Drive Parameters
Parameter
#
Function Settings
1
High/Low Voltage
Input Voltage 120, 220-
240, 460-480
01
02
2
Carrier Frequency
03
4
Stop Method
03
5
Standard Speed Source
04
19
Acceleration Time
120 sec
20 Deceleration Time 60 sec
28
Fixed Boost
1.0
36
Preset Speed
29
38
Skip Bandwidth
3.0
45
Speed at Minimum
Signal
Consult factory test
sticker
46
Speed at Maximum
Signal
Consult factory test
sticker
50
Fault History
View Only
51 thru 58
Miscellaneous
View Only
6.7 FROST PROTECTION
The Dynaforce® is equipped with a heat exchanger frost
protection algorithm where if the boiler inlet or outlet
temperature sensors drop below 41
o
F (5
o
C) the boiler
pump is enabled. If the temperature continues to drop to
38
o
F (3.3
o
C) the burner will be fired to bring the inlet and
outlet temperatures to 50
o
F (10
o
C) to prevent freezing of
the heat exchanger.