SmartFan® Stratus II


CONNECTIONS


Stratus II Variable Frequency Drive AC Motor Speed Control

WARNING: Dangerous voltages are present on the circuit board when connected to the power line and for some time after power is removed. Power must be removed for 30 seconds before making any connections or adjustments to avoid electrical shock or damage to the unit.

MOTOR COMPATIBILITY
For maximum motor life without using a line filter, the use of an inverter duty motor is recommended.

Mounting: Stratus II is supplied with six .16”D mounting holes suitable for #6 screws. Use at least 4 screws to mount Stratus II.

Power Connections: It is recommended that an adequately sized circuit breaker be connected between the power service and Stratus II to permit fail-safe removal of power before making adjustments or connections. Using .250” Female spade type terminals, connect L1 power (white) to location N, connect L2 power (black) to location L, connect Earth ground (green) to location G. Refer to wiring diagram for connections.

Motor Connections: For motor connections, use .250” Female spade type terminals. For single-phase motors, connect motor to positions marked W/T3 and V/T2. For three-phase motors connect to locations W/T3, V/T2 and U/T1. If a three-phase motor runs backwards, disconnect power and switch any 2 of the three wires. Any number of motors may be controlled in parallel from one unit as long as the total current does not exceed the current rating.

To help reduce electrical noise emissions, use shielded cable or place motor wires in a grounded metal conduit.

Using Single-Phase or Three-Phase Motors
Stratus II can control single- or three-phase motors from a single-phase power source. Refer to wiring diagram for motor connections.
To control a 1PH motor set SW2, #8 to the OFF position.
To control a 3PH motor set SW2, #8 to the ON position.
Power must be cycled before this setting will take effect.

MODBUS – RJ-45 Jack for Modbus interface
USB – For future USB interface
STAT1 – Isolated control status LED
SW1 – Future Feature
0-5 – Connection for 0-5 VDC control input
COM – Common connection for all input signals
0-10 – Connection for 0-10 VDC control input
4-20 – Connection for 4-20 mA control input
POT – Connection for a potentiometer or thermistor control input.
5 V – Connection to power a remote transducer or potentiometer, 5VDC @ 50mA
RELAY – Connection for a relay alarm output.

3.3V – Regulated 3.3VDC output
GND – Non-isolated reference level
A – Non-isolated programmable pin
B – Non-isolated programmable pin
Z STOP on contact closure to “GND”
STAT2 – Non-Isolated control status
SW2 – Switches to select single- or three-phase output power, fixed speed mode settings or Modbus address
POWER – 115/230 VAC Power Source Input




Stratus II Variable Frequency Drive AC Motor Speed Control

WIRING DIAGRAM



Stratus II Variable Frequency Drive AC Motor Speed Control Manual Pages

Use the links below for addtional manual pages or for a complete manual or click on the Operation/Installation Manual PDF link above.





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