|Symptom||Possible Cause||Corrective Action|
|The TRP does not activate when commanded.||The solenoid is inoperable.||Test the solenoid.|
|The air volume is low.||Check the air system.|
|Parameter 71 is incorrect (CHC).||Check the value of Parameter 71|
|Alarm 134 TOOL CLAMP FAULT occurs on machines with M18.27 and lower.||The air volume is low.||Check the air system.|
|The retaining ring that holds the drawbar actuator pins is defective (Inline Spindle Only).||Replace the spindle with the latest revision of the spindle, which uses a roll pin to retain the drawbar actuator pins.|
|The bearingless union loosened from the center shaft (50 Taper Only).||
|Alarm 134 TOOL CLAMP FAULT occurs on machines with M18.28 and higher.||A ground wire is loose in the electrical cabinet. (Next Generation Control Only)||Make sure all of the ground wires that are inside of the electrical cabinet are tight. Make sure all the of axis motor-cables are tight.|
The TRP hits the drawbar and makes a loud banging noise.
|The precharge regulator is not adjusted properly.||Properly adjust the precharge regulator.|
|Precharge pressure incorrect on a fixed regulator.||Replace the fixed regulator.|
|The TRP does not push out enough to release the tool.||There is an air leak.||Check air system and low air delay Parameter 76.|
|The drawbar is damaged.||Inspect the drawbar.|
|The TRP pushout is not properly adjusted.||Verify and adjust the drawbar height.|
|The piston o-ring has no lubrication, or the piston/bore or o-ring is damaged.||Replace the TRP.|
|The TRP retracts slowly.
Alarm 130 TOOL UNCLAMPED
Alarm 131 TOOL NOT CLAMPED.
|The return spring is broken.||Replace the TRP base assembly.|
|The humphrey valve is worn.
||A worn humprey valve (quick exhaust valve) can cause air to leak into the piston and cause the TRP to retract slowly. Replace the humprey valve.
|The exhaust muffler is clogged.||Test the exhaust muffler.|
|The piston o-ring has no lubrication, or the piston/bore or o-ring is damaged.||Inspect the piston o-ring.|
|The precharge solenoid is getting stuck due to contamination.||Inspect the precharge solenoid for contamination. For CALM machines inspect solenoid manifold inside the lube panel for contamination. See Water Separator Filter section below.|
|The inline spindle is seized. The inline spindle won't turn.|
Intermittent Alarm 131 TOOL NOT CLAMPED
It is using a Digital SMC Solenoid.
|There is a small delay when the solenoid is commanded off, thus causing the alarm to be generated.||Order service kits 93-3451 & 93-3452 and follow the Low Load Solenoid Valve Kit - Installation procedure.|
Check the air pressure supply.
Check the air volume supplied to machine. Refer to the Air Requirement section in the New Machine Setup / Pre-Installation for required hose size and other instructions.
Check for air leaks in supply hose / solenoid exhaust / TRP.
Verify Parameter 76 Low Air Delay is set to 1500.
Check the value of Parameter 71, DRAW BAR OFFSET.
(Sigma 1 Motors)
(Sigma 5 Motors)
|S Mini Mill||12000||66600|
Remove the exhaust muffler from the solenoid and test TRP operation. Replace the exhaust muffler if necessary.