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

20
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
MC MB MA A1 A2 +V AC AC R+ R-
M4 S6 S5 S4 FM S7 AC S- IG AM S+ M3 M2 M1 E(G)
DATA
ENTER
STOP
HAND
RUN
OFF
RESET
MENU
MONITOR
AUTO
ESC
YASKAWA E7
YASKAWA
GPD 305/J7
S2 MA MB MC S1 FS S3 S4 SC S5 AM FR FC AC
STOP
RESET DATA
ENTER
DSPL
RUN
MAX MIN
FOUT
F/R
FREF MNTR
PRGM
LO/RE
IOUT
OPTION 1 - 0-10 VDC CONTROL
FC FR
0-10 VDC CONTROL SIGNAL (BY OTHERS)
WIRED TO FR (+) AND FC (COMMON)
OPTION 2 - MULTI SPEED CONTROL
S5 S4 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
SN S5 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. 116329 Part No. 465535
OPTIONAL ACCESSORIES