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Variable Frequency Drives for Blowers
Optional factory installed, wired, and programmed variable frequency drives (VFD) may have been provided
for modulating or multi-speed control of the blowers. One VFD is provided for each blower (outdoor air and
exhaust). The VFDs provided are either Yaskawa model E7 or model GPD305. Refer to the tables on the
next page for factory settings and field wiring requirements. Refer to the unit control center for unit specific
wiring diagram (an example wiring diagram has been provided in this section for reference). When making
adjustments outside of the factory setpoints, refer to Yaskawa VFD instruction manual, which can be found
online at www.drives.com. For technical support, contact Yaskawa direct at 1-800-927-5292.
S3
SN SC SP
E(G)
S1 S2
MCMBMAA1 A2 +V AC AC R+ R-
M4S6S5S4 FMS7 AC S-IGAM S+ M3 M2M1
E(G)
DATA
ENTER
STOP
HAND
RUN
OFF
RESET
MENU
MONITOR
AUTO
ESC
YASKAWA E7
YASKAWA
GPD 305/J7
S2
MA
MB MC
S1 FSS3 S4 SCS5 AMFR FC AC
STOP
RESET
DATA
ENTER
DSPL
RUN
MAXMIN
FOUT
F/R
FREF MNTR
PRGM
LO/RE
IOUT
OPTION 1 - 0-10 VDC CONTROL
FCFR
0-10 VDC CONTROL SIGNAL (BY OTHERS)
WIRED TO FR (+) AND FC (COMMON)
OPTION 2 - MULTI SPEED CONTROL
S5S4 SC
YASKAWA BLOWER VFD DETAIL WIRING
NEITHER S4 OR S5 CONTACT CLOSED
DRIVE SPEED = 60 Hz.
DRIVE SPEED = 40 Hz.
S4 TO SC CONTACT CLOSED (BY OTHERS)
S5 TO SC CONTACT CLOSED (BY OTHERS)
DRIVE SPEED = 30 Hz.
TO CHANGE THE FACTORY SET Hz CHANGE THE FOLLOWING PARAMETERS.
PARAMETER n01 CHANGE TO 1
PARAMETER n22 FOR NEW 40Hz SETTING
PARAMETER n21 FOR NEW 60Hz SETTING
PARAMETER n23 FOR NEW 30Hz SETTING
PARAMETER n01 CHANGE TO 0
FOR CONTINUOUS 60Hz OPERATION JUMPER TERMINALS FS AND FR.
0 VDC=30 Hz
10 VDC=60 Hz
USER TO PROVIDE CONTACTS
SEE VFD INSTALLATION MANUAL FOR MORE DETAIL
SEE VFD INSTALLATION MANUAL FOR MORE DETAIL
OPTION 1 - 0-10 VDC CONTROL
SEE VFD INSTALLATION MANUAL FOR MORE DETAIL
USER TO PROVIDE ISOLATION AS REQUIRED
FOR CONTINUOUS 60Hz OPERATION JUMPER TERMINALS A1 AND +V.
WIRED TO A1 (+) AND AC (COMMON)
0-10 VDC CONTROL SIGNAL (BY OTHERS)
10 VDC=60 Hz
0 VDC=30 Hz
A1 AC
SEE VFD INSTALLATION MANUAL FOR MORE DETAIL
PARAMETER A1-01 CHANGE TO 0
PARAMETER D1-03 FOR NEW 30Hz SETTING
PARAMETER D1-01 FOR NEW 60Hz SETTING
PARAMETER D1-02 FOR NEW 40Hz SETTING
PARAMETER A1-01 CHANGE TO 2
TO CHANGE THE FACTORY SET Hz CHANGE THE FOLLOWING PARAMETERS.
DRIVE SPEED = 30 Hz.
S6 TO SN CONTACT CLOSED (BY OTHERS)
S5 TO SN CONTACT CLOSED (BY OTHERS)
DRIVE SPEED = 40 Hz.
DRIVE SPEED = 60 Hz.
NEITHER S5 OR S6 CONTACT CLOSED
SNS5 S6
USER TO PROVIDE CONTACTS AND ISOLATION AS REQUIRED
OPTION 2 - MULTI SPEED CONTROL
AND ISOLATION AS REQUIRED
USER TO PROVIDE ISOLATION AS REQUIRED
FOR ONE 0-10 SIGNAL, WIRE TO DRIVES IN PARALLEL
FOR ONE 0-10 SIGNAL, WIRE TO DRIVES IN PARALLEL
Drawing No. 116329Part No. 465535
OPTIONAL ACCESSORIES