Troubleshooting Electrical controller
- Electrical overload protective device (Shock Relay)
- Electrical overload protective device (Shock Monitor)
SC Series
SB series, ED series
150 Series
50 Series
SC Series
| 1 | The LED display does not light up. |
|---|
| Inspection item 1 | A1, A2 wiring | Inspection results | Not wired correctly | Solution | Wire correctly |
|---|---|---|---|---|---|
| Inspection item 2 | Is the voltage of A1 and A2 between 100 and 240V? | Inspection results | It is different from the 100 to 240V range. | Solution | Between 100 and 240V |
| 2 | No output even when the overcurrent setting is set to the minimum value. |
|---|
| Inspection item 1 | Wiring to current transformers (CTs) | Inspection results | Not wired correctly | Solution | Wire correctly |
|---|---|---|---|---|---|
| Inspection item 2 | Shock Relay model number | Inspection results | Model number error | Solution | Replace with the correct one |
| Inspection item 3 | TEST function | Inspection results | The output relay does not operate | Solution | Shock Relay Replacement |
| 3 | The output relay operates immediately after starting. |
|---|
| Inspection item 1 | Start time setting | Inspection results | The setting is too short | Solution | Adjust to the appropriate value |
|---|---|---|---|---|---|
| Inspection item 2 | Load Current Settings | Inspection results | Setting too low | Solution | Adjust to the appropriate value |
| Inspection item 3 | Setting parameters | Inspection results | Phase reversal, Open phase, and Phase unbalance are set to ON | Solution | Check for Phase reversal or Open phase phase wiring |
| 4 | The output relay operates due to a momentary overload during operation. |
|---|
| Inspection item 1 | Load Current Settings | Inspection results | Setting too low | Solution | Adjust to the appropriate value |
|---|---|---|---|---|---|
| Inspection item 2 | Shock Time Setting | Inspection results | The setting is too short | Solution | Adjust to the appropriate value |
| 5 | The output relay does not operate when overloaded. |
|---|
| Inspection item 1 | Load Current Settings | Inspection results | Setting too high | Solution | Adjust to the appropriate value |
|---|---|---|---|---|---|
| Inspection item 2 | Shock Time Setting | Inspection results | The setting is too long | Solution | Adjust to the appropriate value |
| Inspection item 3 | TEST function | Inspection results | The output relay does not operate | Solution | Shock Relay Replacement |
SB series, ED series
| 6 | MON (monitor lamp) does not light up. ---SB series LED display does not light up. ---ED series |
|---|
| Inspection item 1 | A1, A2 wiring | Inspection results | Not wired correctly | Solution | Wire correctly |
|---|---|---|---|---|---|
| Inspection item 2 | Is the voltage of A1 and A2 24 to 240VAC/DC? | Inspection results | It is different from 24 to 240V. | Solution | Between 24 and 240V |
| 7 | No output even when the current volume setting is at minimum. |
|---|
| Inspection item 1 | Wiring to current transformers (CTs) | Inspection results | Not wired correctly. | Solution | Wire correctly |
|---|---|---|---|---|---|
| Inspection item 2 | Shock Relay model number | Inspection results | Model number error | Solution | Replace with the correct one |
| Inspection item 3 | Press the TEST button | Inspection results | The output relay does not operate | Solution | Shock Relay Replacement |
| 8 | The output relay operates immediately after starting. |
|---|
| Inspection item 1 | Start time setting | Inspection results | The setting is too short | Solution | Adjust to the appropriate value |
|---|---|---|---|---|---|
| Inspection item 2 | Load Current Settings | Inspection results | Setting too low | Solution | Adjust to the appropriate value |
| 9 | The output relay operates due to a momentary overload during operation. |
|---|
| Inspection item 1 | Load Current Settings | Inspection results | Setting too low | Solution | Adjust to the appropriate value |
|---|---|---|---|---|---|
| Inspection item 2 | Shock Time Setting | Inspection results | The setting is too short | Solution | Adjust to the appropriate value |
| 10 | The output relay does not operate when overloaded. |
|---|
| Inspection item 1 | Load Current Settings | Inspection results | Setting too high | Solution | Adjust to the appropriate value |
|---|---|---|---|---|---|
| Inspection item 2 | Shock Time Setting | Inspection results | The setting is too long | Solution | Adjust to the appropriate value |
| Inspection item 3 | Press the TEST button | Inspection results | The output relay does not operate | Solution | Shock Relay Replacement |
150 Series
| 11 | The power indicator light does not light up. |
|---|
| Inspection item 1 | POWER terminal wiring | Inspection results | Not wired correctly | Solution | Wire correctly |
|---|---|---|---|---|---|
| Inspection item 2 | POWER terminal voltage (between terminals 100/110V) In case of the above operating power supply |
Inspection results | Different from AC100/110V | Solution | Switch to AC100/110V |
| Inspection item 3 | POWER terminal voltage (between terminals 200/220V) In case of the above operating power supply |
Inspection results | Different from AC200/220V | Solution | Set to AC200/220V |
| 12 | The % meter does not move while driving. |
|---|
| Inspection item 1 | Current transformer wiring | Inspection results | Not wired correctly | Solution | Wire correctly |
|---|---|---|---|---|---|
| Inspection item 2 | Current transformer model number | Inspection results | Model number error | Solution | Replace with the correct one |
| Inspection item 3 | Press the TEST button | Inspection results | The % meter does not move | Solution | Shock Relay Replacement |
| 13 | The output relay operates immediately after starting. |
|---|
| Inspection item 1 | Start time setting | Inspection results | The setting is too short | Solution | Adjust to the appropriate value |
|---|---|---|---|---|---|
| Inspection item 2 | Current Settings | Inspection results | Setting too low | Solution | Adjust to the appropriate value |
| 14 | The motor starts, but the % meter reading is different from the actual current. |
|---|
| Inspection item 1 | Common type current transformer | Inspection results | Terminals not wired correctly | Solution | Wire correctly |
|---|---|---|---|---|---|
| Inspection item 2 | Through-type current transformer | Inspection results | The number of penetrations is incorrect | Solution | Correct penetration count |
| Inspection item 3 | Current transformer model number | Inspection results | Model number error | Solution | Replace with the correct one |
| 15 | The output relay operates due to a momentary overload during operation. |
|---|
| Inspection item 1 | Load Current Settings | Inspection results | Setting too low | Solution | Adjust to the appropriate value |
|---|---|---|---|---|---|
| Inspection item 2 | Shock Time Setting | Inspection results | The setting is too short | Solution | Adjust to the appropriate value |
| 16 | The output relay does not operate when overloaded. |
|---|
| Inspection item 1 | Load Current Settings | Inspection results | Setting too high | Solution | Adjust to the appropriate value |
|---|---|---|---|---|---|
| Inspection item 2 | Shock Time Setting | Inspection results | The setting is too long | Solution | Adjust to the appropriate value |
| Inspection item 3 | Press the TEST button | Inspection results | The output relay does not operate | Solution | Shock Relay Replacement |
50 Series
| 17 | The input indicator light does not light up after the motor starts. |
|---|
| Inspection item 1 | POWER terminal wiring | Inspection results | Not wired correctly | Solution | Wire correctly |
|---|---|---|---|---|---|
| Inspection item 2 | POWER terminal voltage (between terminals 100/110V) In case of the above operating power supply |
Inspection results | Different from AC100/110V | Solution | Switch to AC100/110V |
| Inspection item 3 | POWER terminal voltage (between terminals 200/220V) In case of the above operating power supply |
Inspection results | Different from AC200/220V | Solution | Set to AC200/220V |
| 18 | The output relay operates immediately after starting. |
|---|
| Inspection item 1 | Load Current Settings | Inspection results | Setting too low | Solution | Adjust to the appropriate value |
|---|
| 19 | The output relay operates due to a momentary overload during operation. |
|---|
| Inspection item 1 | Load Current Settings | Inspection results | Setting too low | Solution | Adjust to the appropriate value |
|---|---|---|---|---|---|
| Inspection item 2 | Shock Time Setting | Inspection results | The setting is too short | Solution | Adjust to the appropriate value |
| 20 | The output relay does not operate when overloaded. |
|---|
| Inspection item 1 | Load Current Settings | Inspection results | Setting too high | Solution | Adjust to the appropriate value |
|---|---|---|---|---|---|
| Inspection item 2 | Shock Time Setting | Inspection results | The setting is too long | Solution | Adjust to the appropriate value |
| Inspection item 3 | Current transformer model number | Inspection results | Model number error | Solution | Replace with the correct one |
*If the results of the above investigation show that there are no problems and that Shock Relay needs to be replaced, please contact our customer support center.
