Carrier 23XL Especificações descarregar pdf (Página 85)

Table 13 — Benshaw, Inc. Solid-State Starter Troubleshooting Guide

PROBLEM PROBABLE CAUSES AREA OF CORRECTION

BIPCRS6AK board phase correct

not on.

1. L1 and L3 switch phases

reversed.

2. Missing phase voltage.

3. Improper line voltage.

1. Switch incoming phases L1 and L3 at top of CD1 or

CB1.

2. Check for missing phase voltage.

3. Verify proper line voltage applied against synchronizing

transformer voltage.

BIPCRS6AK board relay not on. Ribbon cable not properly

seated.

Check ribbon cable for proper seating. Replace board if

necessary.

BIPCRS6AK board power

+15 vdc not on.

1. Improper line voltage.

2. Transformer malfunction.

1. Make sure proper line voltage is present at primary syn-

chronizing transformer.

2. Check synchronizing transformer secondary voltage as

follows: On the BIPCRS6BC board, measure from

TB11-1 to TB11-2 and TB11-3 TB11-1 to TB11-3. Both

readings should be within 30 to 36 vac. On the

BIPCRS6BC board, measure from TB11-1 to TB11-4 and

TB11-2 to TB11-4. Both readings should be within 18 to

24 vac. Replace synchronizing transformer if voltages are

not within the speciﬁed tolerances.

BIPCDVDT1/1L boards LEDs not

on.

1. A short exists between line

and load terminals.

2. An SCR is shorted in the

phase assembly.

1. Remove power and check resistance with ohmmeter.

Locate and remove stray wire strands if required.

2. Remove power. Use ohmmeter to measure the resis-

tance or each SCR phase assembly from anode to

cathode. The reading should be 50,000 ohm or greater. If

not, replace phase assembly.

BIPCRS6BC board over-

temperature LED (L3) on prior to

run command.

1. Temperature switch not

functioning properly.

2. BIPCRS6BC board not

functioning properly.

1. Disconnect power and check for continuity between

TB11-10 and TB11-11. If no continuity exists, the over-

temperature switch is not functioning properly. Replace

defective switch if necessary.

2. Make sure BIPCRS6BC board is functioning properly.

Replace board if necessary.

BIPCRS6BC board LEDs on

prior to run command.

BIPCRS6BC board not

functioning properly.

Board not functioning properly. Replace board, if

necessary.

BIPCRS6BC board LEDs not on

after run command but before

starter reaches full voltage.

1. Phase assembly malfunction.

2. BIPCRS6BC board not

functioning properly.

1. Remove power and check SCRs. Ohmmeter reading of

each SCR gate to cathode resistance at terminals is

8 to 20 ohm. If not, replace the phase assembly.

2. Replace board, if necessary.

BIPCDVDT1/1L board LEDs re-

main on after starter reaches full

voltage.

Imbalance between phases ex-

ists in motor terminal voltages.

Check for loose SCR gate lead or open SCR gate. Replace

phase assembly, if necessary.

BIPCRS6BC board run LED (L5)

not lit.

BIPCRS6BC board not

functioning properly.

Measure 24 vdc at TB11-8 to TB11-4. If voltage is present,

replace board. If not present, replace relay 1CR.

BIPCRS6AK board power ap-

plied, run command given,

starter at full voltage, but aux

LED not lit.

BIPCRS6AK board not

functioning properly.

Replace board.

BIPCDVDT1/1L boards LEDs lit. Motor terminal voltage phase

imbalance exists.

Check motor terminal voltages for imbalance between

phases. If an imbalance exists, check for loose SCR gate or

open SCR gate. Replace phase assembly, if necessary.

BIPCRS6BC board LED L4 and

L5 not lit.

BIPCRS6BC board not

functioning properly.

Replace board.

BIPCRS6BC board LED L3 lit. 1. FU5 and FU6 fuses not

functioning properly.

2. Phase assembly not

functioning properly.

3. Fan not functioning properly.

1. Check fuses FU5 and FU6. Replace if necessary.

2. Verify that bypass is pulling in by measuring the voltage

drop across the contacts. The reading should be 50 mV

or less. Replace phase assembly, if necessary.

3. Verify fan operation on each phase for 200 amp units.

Replace fan, if necessary.

BIPCRS6BC board L2 lit. SCR phases not functioning

properly.

Measure resistance from anode to cathode for each SCR

phase assembly. Replace shorted phase, if necessary.

BIPCRS6BC board L1 lit. Motor lead grounded. Megger motor to test for motor lead going to ground.

Start command given. Motor does not begin rotation. Turn ‘Starting Torque’ potentiometer RV2 clockwise until

motor rotation begins.

Motor does not reach full speed

within 25 seconds.

Ramp up setting is not correct. Turn ‘Ramp’ potentiometer RV1 counterclockwise. Restart

motor and verify that motor reaches full speed within

25 seconds.

115 vac missing from LL1 and

LL2.

1. CB2 is not on.

2. Fuse no. 4 (FU4) blown.

1. Verify CB2 is on.

2. Check FU4 for continuity. Replace, if necessary.

SMM not responding. 1. CB4 is not on.

2. Potentiometer RV1 needs

adjustment.

1. Verify CB4 is on.

2. Adjust potentiometer RV1 for 24 vac at SMM terminals

J3-23 and J3-24.

LEGEND

LED — Light-Emitting Diode

SCR — Silicon Control Rectiﬁer

SMM — Starter Management Module

1 2 ... 80 81 82 83 84 85 86 87 88 89 90 ... 103 104

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