AC Tech SCF SERIES Skrócona instrukcja obsługi

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SCF TERMINAL STRIP

CIRCUIT COMMON

0-10 VDC SPEED REFERENCE INPUT

10 VDC SUPPLY FOR SPEED POT

12 VDC SUPPLY (50 mA MAX.)

CIRCUIT COMMON

OPEN COLLECTOR OUTPUT

TB-13A FUNCTION SELECT

TB-13B FUNCTION SELECT

TB-13C FUNCTION SELECT

OPEN COLLECTOR OUTPUT

4-20 mA SPEED REFERENCE INPUT

CIRCUIT COMMON

0-10 OR 2-10 VDC OUTPUT: FREQ. OR LOAD

0-10 OR 2-10 VDC OUTPUT: LOAD

RS-485 SERIAL COMMUNICATIONS

PI CONTROL WIRING EXAMPLE

Shown below is a wiring diagram for a typical PI control scheme with

a 2-wire start/stop and 4-20 mA feedback. The PI setpoint is adjusted

using the  and  butons on the front of the drive.

- Set Parameter 10 (TB-13A) to Keypad Setpoint (12).

- Set Parameter 61 (PI MODE) to Normal 4-20 mA (02) or

Reverse 4-20 mA (04) depending on the type of system to be

controlled.

- Set the other PI parameters as necessary

(refer to the SCF manual).

11 12

13A

13B

Run/Stop Contact

DIAGNOSTIC AND DISPLAY MESSAGES

DISPLAY

STOP

Speed Reference Codes

START

Pr1

Pr7

Status Indication

13A

13B

13C

Diagnostic Codes

TXA

TXB

13C 15

4-20 mA Feedback

DESCRIPTION

CONTROL PAD: The drive speed is controlled by the ▲ and ▼ buttons on the front

of the drive.

EXTERNAL CURRENT: The drive speed is controlled by a 4-20 mA signal between

TB-25 and TB-2.

EXTERNAL VOLTAGE: The drive speed is controlled by a 0-10 VDC signal between

TB-5 and TB-2.

JOG: The drive is in Jog mode and the speed is set by preset speed #2 (Parameter 32).

MOP: Contacts wired to TB-13B and 13C are used to increase and decrease the drive

speed.

PRESET SPEEDS #1-7: The drive speed is set by the selected Preset Speed (Param-

eters 31-37).

DC BRAKING: The DC braking circuit is activated.

CURRENT LIMIT: The output current has exceeded the CURRENT LIMIT setting

(Parameter 25) and the drive is reducing the output frequency to reduce the output

current. If the drive remains in CURRENT LIMIT for too long, it can trip into a CUR-

RENT OVERLOAD fault (PF).

ERROR: Invalid data has been entered.

"GE" will be displayed if an attempt is made to change the OEM default settings when

the drive is operating in the OEM mode (see Parameter 48).

FAULT LOCKOUT: Failed three restart attempts. Requires a manual reset.

SERIAL: The optional remote keypad is active as the user interface instead of the but-

tons on the front of the drive.

START PENDING: This is displayed during the 15 second interval between restart

attempts.

HIGH TEMPERATURE FAULT: Ambient temperature is too high.

CONTROL FAULT: A blank EPM, or EPM with corrupted data has been installed.

Perform a factory reset (Parameter 48).

INCOMPATIBILITY FAULT: An EPM with a different parameter version has been

installed.

DYNAMIC BRAKING FAULT: The drive has sensed the dynamic braking resistors are

overheating.

EXTERNAL FAULT: TB-13A and/or TB13C is set as an external fault input and TB-13A

and/or TB-13C is open with respect to TB-2.

DATA FAULT: User data and OEM defaults in the EPM are corrupted.

HIGH DC BUS VOLTAGE FAULT: Line voltage is too high; Deceleration rate is too

fast; Overhauling load. Fast deceleration and overhauling loads may require dynamic

braking.

SERIAL FAULT: The watchdog timer has timed out, indicating that the serial link has

been lost.

LOW DC BUS VOLTAGE FAULT: Line voltage is too low.

OUTPUT TRANSISTOR FAULT: Phase to phase or phase to ground short circuit on

the output; Failed output transistor; Boost settings are too high; Acceleration rate is

too fast.

CURRENT OVERLOAD FAULT: VFD is undersized for the application; Mechanical

problem with the driven equipment.

SINGLE-PHASE FAULT: Single-phase input power has been applied to a three-phase

drive.

START FAULT: Start command was present when the drive was powered up. Must

wait 2 seconds after power-up to apply Start command if START METHOD is set to

NORMAL.

EPM FAULT: The EPM is missing or damaged.

INTERNAL FAULTS: The control board has sensed a problem. Consult factory

Quick Reference Guide

This guide is intended as an aid to conﬁgure the SCF drive.

NOTE: Before installing and operating the SCF drive, please

read and become familiar with the SCF Series installation

and operation manual.

AC Technology Corporation

630 Douglas St, Uxbridge, MA 01569

800-217-9100, FAX: 508-278-7873

QR-SCF-OEOD-e2

SCF Series