Variable Frequency Drives And Wiring - Greenheck PVE-20 Installation, Operation And Maintenance Manual

Variable Frequency Drives for Energy Recovery Blowers
Optional factory installed, wired, and programmed variable frequency drives (VFDs) may have been provided
for modulating or multispeed control of the blowers. One VFD is provided for each blower (supply air and
exhaust). The VFD's provided are either Yaskawa model V1000 or J1000. Refer to the tables in this section 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 manual for reference). When making adjustments outside of
the factory set points, 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.
R+
P1 P2 PC A1
S1 S2 S3 S4
V1000
OPTION 1 - 0-10 VDC CONTROL
USER TO PROVIDE ISOLATION AS REQUIRED
0-10 VDC CONTROL SIGNAL (BY OTHERS)
A1 AC
WIRED TO A1 (+) AND AC (COMMON)
0 VDC=30 Hz
10 VDC=60 Hz
FOR ONE 0-10 SIGNAL, WIRE TO DRIVES IN PARALLEL
SEE VFD INSTALLATION MANUAL FOR MORE DETAIL
FOR CONTINUOUS 60Hz OPERATION JUMPER TERMINALS A1 AND +V.
OPTION 2 - MULTI SPEED CONTROL
USER TO PROVIDE CONTACTS AND ISOLATION
AS REQUIRED
NEITHER S4 OR S5 CONTACT CLOSED
S4 S5 SC
DRIVE SPEED = 60 Hz.
S4 TO SC CONTACT CLOSED (BY OTHERS)
DRIVE SPEED = 40 Hz.
S5 TO SC CONTACT CLOSED (BY OTHERS)
DRIVE SPEED = 30 Hz.
SEE VFD INSTALLATION MANUAL FOR MORE DETAIL
TO CHANGE THE FACTORY SET Hz CHANGE THE FOLLOWING PARAMETERS.
PARAMETER A1-01 CHANGE TO 2
PARAMETER d1-01 FOR NEW 60Hz SETTING
PARAMETER d1-02 FOR NEW 40Hz SETTING
PARAMETER d1-03 FOR NEW 30Hz SETTING
PARAMETER A1-01 CHANGE TO 0
12
Model PVe Heat Recovery Unit
R- S+ S- IG
A2 +V AC AM AC MP
S5 S6 S7 HC SC H1 RP MA MB MC S1 S2 S3
J1000
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 60Hz
Multispeed: Digital contact closures by others
command the VFD to run at multiple speed settings:
• SC to S4 - Drive runs at 40Hz
• SC to S5 - Drive runs at 30Hz
CO 2 Sensor: A digital contact closure from an
optional factory provided CO 2 sensor sends the
VFD to high or low speed depending on CO 2 ppm
levels at the sensor.
The terminal locations for Modulating (option 1) and
Multispeed (option 2) are shown on the left. 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 on the next
page. These settings are based on the VFD mode
selected.
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
S4 S5 SC A1 +V AC AM AC MA MB MC