Greenheck Fan HEAT RECOVERY UNIT WITH EVAPORATIVE COOLING HRE-20 - Manual (Page 21)

21
S1 to SN contact for On/Off
A1 (0-10VDC) referenced to AC (Can use +15 VDC from +V)
Parameter Setting
A1-01 Access Level 2
C6-02 Carrier frequency 2
d2-02 Ref Lower Limit 50%
E2-01 Motor Rated FLA Motor FLA
H3-03 Terminal A1 Bias 50%
O2-03 User Defaults 1
A1-01 Access Level 0
S1 to SC contact for On/Off
FR (0-10VDC) referenced to FC (Can use +12 VDC from FS)
Parameter Setting
n01 Access Level 1
n31 Ref Lower Limit 50%
n32 Motor Rated FLA Motor FLA
n40 Multi-Function output (MA,MB,MC) 0
n42 Analog Freq . Reference Bias 50%
n46 Carrier Frequency 2
n01 Access Level 0
Factory Setpoints - MODULATING CONTROL (0-10 VDC) FOR FAN SPEED
Yaskawa E7 Drive Yaskawa GPD-305 Drive
OPTIONAL ACCESSORIES
Variable frequency drives (VFD) for the blowers are factory setup to receive a 0-10 VDC signal wired in the field
(refer to previous page for terminal locations) . Most of the setpoints in the VFDs are factory defaults . There are
a few, though, that are changed at Greenheck and are shown in the tables below . To gain access to change
setpoints on the E7 drive, parameter A1-01 needs to be set at “2” . To gain access to change setpoints on the GPD-
305 drive, parameter n01 needs to be set at “1” . To prevent access on either drive, change the parameter to “0” .
Factory Setpoints - MULTI-SPEED CONTROL (1/3 OR 1/2 SPEED REDUCTION) FOR FAN SPEED
S1 to SN contact for On/Off
Parameter Setting
A1-01 Access Level 2
b1-01 (Frequency) Reference Source 0
C6-02 Carrier frequency 2
d1-01 Frequency Reference 1 60
d1-02 Frequency Reference 2 40
d1-03 Frequency Reference 3 30
d1-04 Frequency Reference 4 60
E2-01 Motor Rated FLA Motor FLA
O2-03 User Defaults 1
A1-01 Access Level 0
Yaskawa E7 Drive
S1 to SC contact for On/Off
Parameter Setting
n01 Access Level 1
n03 Reference Selection 1
n21 Frequency Reference 1 60Hz
n22 Frequency Reference 2 40Hz
n23 Frequency Reference 3 30Hz
n24 Frequency Reference 4 60Hz
n32 Motor Rated FLA Motor FLA
n38* Multi-function Input Sel 4 (Term S4) 6
n39* Multi-function Input Sel 5 (Term S5) 7
n40 Multi-Function output (MA,MB,MC) 0
n46 Carrier Frequency 2
n01 Access Level 0
*Parameter n39 must be set to 7 before n38 can be set to 6 (the
drive does not allow these parameters to be the same number, n39
default is 6)
Yaskawa GPD-305 Drive
Variable Frequency Drives for
Energy Recovery Wheel
Factory installed VFD for the energy recovery wheel are programmed at the factory per the settings shown
below . Refer to the instruction manual that ships with the unit when making adjustments . A copy of the manual
can be found online at www .drives .com . For technical support, contact Yaskawa direct at 1-800-927-5292 .
Parameter Setting
n01 Access Level 1
n30 Ref Upper Limit 100% or 66%*
n32 Motor Rated FLA Motor FLA
n33 Elect Thermal Overload 1
n36 Multi-Function input (terminal S2) 10
n40 Multi-Function output (MA,MB,MC) 4
n41 Analog Freq . Reference Gain 0
n42 Analog Freq . Reference Bias 99
n46 Carrier Frequency 2
n58 Frequency Detection Level 20
n01 Access Level 0
Yaskawa GPD-305 Drive
*36 inch wheel is 66% (40Hz) . All other wheels are 100% (60Hz) .