Carrier GTR040-420 Dokumentacja Pobierz pdf (Strona 95)

APPENDIX C — Motormaster® V Configuration (cont)

Motormaster V Fault Codes

EGEND

Liquid Line Pressure Set Point Adjustment —

Adjusting the set point is not recommended due to possible

interaction with other head pressure software algorithms or

controls. In situations where the set point must be changed, the

set points for R-22 and R-134a operation are found in P34 and

P35. A higher value will result in a higher liquid line set point.

Example: increasing the R-22 set point from 18.0 to 18.1 will

increase the liquid line pressure by approximately 10 psi.

EPM Chip —

The drive uses a electronic programming

module (EPM) chip to store the program parameters. This is an

EEPROM memory chip and is accessible from the front of the

VFD. It should not be removed with power applied to the

VFD.

Loss of CCN Communications —

Carrier Comfort

Network (CCN) communications with external control sys-

tems can be affected by high frequency electrical noise gener-

ated by the Motormaster V control. Ensure unit is well ground-

ed to eliminate ground currents along communication lines.

If communications are lost only while Motormaster V con-

trol is in operation, order a repeater (CEAS420876-2) and pow-

er supplies (CEAS221045-01, 2 required) for the CCN com-

munication line.

FAULT CODE DESCRIPTION SOLUTION

High Temperature Fault: Ambient temperature is too high;

Cooling fan has failed (if equipped).

Check cooling fan operation.

Control Fault: A blank EPM, or an EPM with corrupted data

has been installed.

Perform a factory reset using Parameter 48 — PROGRAM SELECTION.

See Drive Programming section, page 93.

Incompatibility Fault: An EPM with an incompatible parame-

ter version has been installed.

Either remove the EPM or perform a factory reset (Parameter 48) to change

the parameter version of the EPM to match the parameter version of the

drive.

Data Fault: User data and Carrier defaults in the EPM are

corrupted.

Restore factory defaults by toggling P48 to another mode. Then set P48 to

desired mode to restore all defaults for that mode. See Drive Programming

section, page 93. If that doesn’t work, replace EPM.

High DC Bus Voltage Fault: Line voltage is too high; Decel-

eration rate is too fast; Overhauling load.

Check line voltage — set P01 appropriately.

Serial Fault: The watchdog timer has timed out, indicating

that the serial link has been lost.

Check serial connection (computer).

Check settings for P15.

Check settings in communication software to match P15.

LF Low DC Bus Voltage Fault: Line voltage is too low. Check line voltage — set P01 appropriately.

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.

Reduce boost or increase acceleration values. If unsuccessful, replace

drive.

Current Overload Fault: VFD is undersized for the applica-

tion; Mechanical problem with the driven equipment.

Check line voltage — set P01 appropriately.

Check for dirty coils.

Check for motor bearing failure.

Single-phase Fault: Single-phase input power has been

applied to a three-phase drive.

Check input power phasing.

F1 EPM Fault: The EPM is missing or damaged. Install EPM or replace with new EPM.

F2 - F9, Fo Internal Faults: The control board has sensed a problem. Consult factory.

Drive display = ‘---’ even

though drive should be

running

Start jumper is missing. Replace start jumper. See Drive Programming section, page 93.

VFD not slowing down

even though liquid line

pressure is below

setpoint.

Faulty pressure transducer output

VFD set for manual control.

Check VDC signal between TB5 and TB2. Should be in range of 0.5 V to

4.5 V.

Restore VFD to automatic control. Change Parameter P05 back to correct

value shown in Program Parameters table.

VFD flashes “---”

and LCS

No start jumper in place. Refer to Motormaster V Configuration table for proper jumper

locations.

Unknown problem

Restore factory defaults. Restore factory defaults by toggling P48 to another mode. Then set P48 to

desired mode to restore all defaults for that mode. See Drive Programming

section, page 93. This will override all previous user inputs.

VFD flashes 57 (or 47)

and LCS

Speed signal lost. Drive will operate at 57 (or 47) Hz until

reset or loss of start command. Resetting requires cycling

start command (or power).

Transducer signal lost. Check VDC signal between TB5 and TB2. Should be

in range of 0.5V to 4.5V. 5VDC output should be present between TB6 and

TB2.

EPM — Electronic Programming Module

LCS — Loss of Control Signal

VFD — Variable Frequency Drive

1 2 ... 90 91 92 93 94 95 96 97 98 99 100 ... 103 104

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