Greenheck ERV Series Installation, Operation And Maintenance Manual page 23

Factory Set Points
Variable frequency drives (VFDs) for the blowers are
factory setup to operate in one of the three following
modes:
• Modulating: 0-10 VDC signal wired in the field by
others varies the speed of the blower between 30
and 60 Hz
• Multi-speed: Digital contact closures by others
command the VFD to run at multiple speed settings:
○ Open - Drive runs at 60 Hz
○ SC to S4 - Drive runs at 40 Hz
○ SC to S5 - Drive runs at 30 Hz
• CO Sensor:
2
○ Set Point Control: A carbon dioxide sensor is
provided from the factory for field mounting OR
unit mounting in the space(s) being served by the
energy recovery unit. The CO
to the unit VFD's with two preset speeds of 700
PPM or less CO = 50% fan speed and 800 PPM
2
or greater CO = 100% fan speed.
2
○ Proportional Control: A carbon dioxide sensor
is provided from the factory for field mounting OR
unit mounting in the space(s) being served by the
energy recovery unit. The CO
to the unit VFD's with default factory settings
of 500 PPM or less CO
1000 PPM or greater CO
Modulation of VFD occurs proportional to CO
between 500 and 1000 PPM.
The terminal locations for modulating and multi-speed
are shown on the previous page. Most of the set points
in the VFDs are Yaskawa factory defaults. However,
a few set points are changed at Greenheck and are
shown in the tables. These settings are based on the
VFD mode selected.
Change Set Points
To gain access to change set points on the V1000 and
J1000 drives, parameter A1-01 needs to be set at "2".
To prevent access or tampering with drive settings on
either drive, change parameter A1-01 to "0".
• Drive Operation
○ SC to S1 contact for On/Off
○ A1 (0-10 VDC) referenced to AC.
Can use +15 VDC from +V.
Resetting the V1000 drive to factory defaults
To reset the V1000 drive back to Greenheck factory
defaults, go to parameter A1-01 and set it to "2". Then
go to A1-03 and change it to "1110" and press enter.
The drive is now reset back to the settings programmed
at Greenheck. This option is not available on the J1000.
®
sensors are wired
2
sensors are wired
2
= 50% fan speed and
2
= 100% fan speed.
2
2
MODULATING CONTROL FOR FAN SPEED
(0-10 VDC)
Parameter
A1-01 Access Level
B1-17 VFD Start-Up Setting
C6-02 Carrier Frequency
D2-02 Ref Lower Limit
E2-01 Motor Rated FLA
H2-01 Terminal MA, MC Function
H3-04 Terminal A1 Bias
L4-01 H2-01 Frequency Detection
L5-01 Auto Restart Attempt
A1-01 Access Level
CO SENSOR CONTROL FOR FAN SPEED
2
(1/2 SPEED WHEN CO
2
(FULL SPEED WHEN CO
MULTI-SPEED CONTROL FOR FAN SPEED
(1/3 OR 1/2 SPEED REDUCTION)
Parameter
A1-01 Access Level
Reference Source
B1-01
(Frequency)
B1-17 VFD Start-Up Setting
C6-02 Carrier Frequency
D1-01 Frequency Reference 1
D1-02 Frequency Reference 2
D1-03 Frequency Reference 3
D1-04 Frequency Reference 4
D2-02 Ref Lower Limit
E2-01 Motor Rated FLA
Multi-Function Input Sel 4
H1-04
(Terminal S4)
Multi-Function Input Sel 5
H1-05
(Terminal S5)
Multi-Function Input Sel 6
H1-06
(Terminal S6)
H2-01 Terminal MA, MC Function
H3-10 A2 Not Used
L4-01 H2-01 Frequency Detection
L5-01 Auto Restart Attempt
A1-01 Access Level
Setting
V1000 J1000
2 2
1 1
1 1
50% 50%
Motor Motor
FLA FLA
5 5
50% 50%
15 15
5 5
0 0
DROPS BELOW 700 PPM)
RISES ABOVE 800 PPM)
2
Setting
V1000 J1000
2 2
0 0
1 1
1 1
60 Hz 60 Hz
40 Hz 40 Hz
30 Hz 30 Hz
60 Hz 60 Hz
50% 50%
Motor Motor
FLA FLA
3 3
4 4
5 NA
5 5
F NA
15 15
5 5
0 0
Energy Recovery Ventilator 23