AC Tech SCF Series Quick Reference Manual

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
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).
1 2 5 6 11 12 2 14 13A 13B
Run/Stop Contact
DIAGNOSTIC AND DISPLAY MESSAGES
DISPLAY
STOP 1
Speed Reference Codes
2
CP
5
EI
6
EU
11
JG
START 12
OP
2 Pr1 Pr7
-
Status Indication
14
br
13A
CL
13B
Er
13C
GE
LC
15
SE
25
SP
2
Diagnostic Codes
30 AF
CF
31
cF
TXA
dF
TXB
EF
GF
HF
JF
LF
OF
PF
SF
13C 15 25 2
UF
F1
4-20 mA Feedback
F2 F9 Fo
- ,
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
www.actechdrives.com