Variable Frequency Drives for Energy Recovery Blowers
Optional factory installed, wired, and programmed variable frequency drives (VFDs) may have been provided for modulating or
R+ R- S+ S- IG
P1 P2 PC A1 A2 +V AC AM AC MP
S1 S2 S3 S4 S5 S6 S7 HC SC H1 RP MA MB MC
V1000
OPTION 1 -
USER TO PROVIDE ISOLATION AS REQUIRED
A1 | AC | |||
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| WIRED TO A1 (+) AND AC (COMMON) |
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| 0 VDC=30 Hz |
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| 10 VDC=60 Hz |
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FOR ONE
FOR CONTINUOUS 60Hz OPERATION JUMPER TERMINALS A1 AND +V.
OPTION 2 - MULTI SPEED CONTROL
USER TO PROVIDE CONTACTS AND ISOLATION
AS REQUIRED
S4 | S5 | SC | NEITHER S4 OR S5 CONTACT CLOSED | |
DRIVE SPEED = 60 Hz. | ||||
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| S4 TO SC CONTACT CLOSED (BY OTHERS) | |
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| DRIVE SPEED = 40 Hz. | |
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| S5 TO SC CONTACT CLOSED (BY OTHERS) | |
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| DRIVE SPEED = 30 Hz. |
SEE VFD INSTALLATION MANUAL FOR MORE DETAIL
TO CHANGE THE FACTORY SET Hz CHANGE THE FOLLOWING PARAMETERS.
PARAMETER n01 CHANGE TO 1
PARAMETER n21 FOR NEW 60Hz SETTING
PARAMETER n22 FOR NEW 40Hz SETTING
PARAMETER n23 FOR NEW 30Hz SETTING
PARAMETER n01 CHANGE TO 0
16Model ERV Energy Recovery Unit
S1 S2 S3 S4 S5 SC A1 +V AC AM AC | MA MB MC |
J1000 |
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Factory Set Points
Variable Frequency Drives (VFDs) for the blowers are factory setup to operate in one of the three following modes:
Modulating:
•SC to S4 - Drive runs at 40Hz
•SC to S5 - Drive runs at 30Hz
CO2 Sensor: A digital contact closure from an optional factory provided CO2 sensor sends the VFD to high or low speed depending on CO2 ppm levels at the sensor.
The terminal locations for Modulating (option 1) and
To gain access to change set points on the V1000 and J1000 drives, parameter
Drive Operation
SC to S1 contact for On/Off
A1