Analog outputs are modulating signals sent by the variable frequency drive to a device such as a meter that could display speed or current. Analog inputs are used to interface the VFD with an external 0-10 V DC or 4-20 mA signal, For example, a speed setpoint from an external speed control potentiometer.Īnalog outputs. Relay outputs are normally rated for both AC & DC voltages.Īnalog inputs. Relay outputs, which are known as "dry" contacts, switch some thing external, closing or opening another potential. Digital outputs have a volt age potential (e.g., 24 V DC) coming from them. Digital/relay outputs are two position signals (on/off) sent by the variable frequency drive to devices such as pilot lights, alarms, auxiliary relays, solenoids, & PLC digital input modules. Note that the control logic is determined & executed by the program within the VFD & not by the hard-wiring arrangement of the input control devices.ĭigital/relay outputs. Inputs can also be programmed for two- or three-wire control to accommodate either maintained or momentary start methods. Therefore, interlocking, as required on electromechanical devices, is not required for variable frequency drive for ward/reverse operations. Because variable frequency drives are electronic devices, they can have only one phase rotation output at a time.
#24 V RELAY TO SELECT FORWARD AND REVERSE MOTOR MANUAL#
Thermal Overload Relays Manual Motor Starters Type GMS-32S and GMS-32H Rated Operational current. By feed a signal Reverse Rotation change a B pins of 2N3904 give it works to give the electric current to the coil relay. The relay 12V 2 contract, for change electronic pole gives motor. By use power mosfet number IRF150 use apply to 100W small stump size hills. For example, if a motor has to operate at three different speeds, a relay or switch contact could be made to close & send signals to separate digital inputs points that would change the motor speed to the preset value.įollowing diagram shows typical input digital connections for two-wire or three-wire control with stop, forward, reverse, & jogging functions. Non-Reversing 6 - 6A A - AC Coil 24 - 24V 10 - 1 NO 12 - Up to 12A M - Mini 0.1 0.16A S - Screw. It can motor control turn advance or walk go backwards all right. Each digital input may have a preset function assigned to it, such as start/stop, forward/reverse, external fault, & preset speed selections.
Digital inputs are used to interface the VFD with devices such as push buttons, selector switches, relay contacts & PLC digital output modules.
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