ProcedureGantryFunctional ChecksMeasure

Check the gantry rotation speed voltage from the KGTSM PWB to the servo amplifier

Verify the voltage the KGTSM PWB sends to the rotation servo amplifier as the command corresponding to gantry rotation speed. This is a bench check performed with the servo cable disconnected, so the gantry rotation section is not driven during the measurement — you are reading a signal from the KGTSM, not commanding actual rotation.

Applies to
Activion16 (TSX-031A) gantry KGTSM PWB / rotation servo amplifier. No model- or revision-specific restriction is stated in source for this task.
Steps
8 steps
Source
2D201-112EN*D §3.7.7 'Checking the rotation speed voltage sent from KGTSM PWB to the servo speed amplifier' (pp. 266–267)

Tools & parts

ItemPart numberQty
PCn/a in source1
Service cableGR-1 (as standard)1
Terminal emulatorn/a in source1
Digital testern/a in source1
CP320circuit breaker — servo amplifier power1
KGTSM PWBn/a in source1

Safety

NOTICE

Hazard: Leaving step 8 incomplete after finishing the voltage check — i.e. not reconnecting the servo cable to CN431 and/or not returning DSW10 (bits 1–2 OFF) and DSW4 (bit 1 ON) to their normal positions

Consequence: the KGTSM/servo amplifier is left in the bench-check configuration (servo cable disconnected, board addressed for test), so the rotation servo will not respond to normal commands

Avoidance: always complete step 8 in full before returning the gantry to service — source labels this restoration "always required" after the check

Full step-by-step for Check the gantry rotation speed voltage from the KGTSM PWB to the servo amplifier

All 8 steps are documented in the FSELIB Activion16 (TSX-031A) service manual — re-authored, web-first, with the real figures from the source.

Open the full procedure

Related Gantry guides

Adjust the gantry positioning projectors (side, slant, and median)10 stepsAdjust the gantry rotation belt tension16 stepsAdjust the gantry rotation speed (servo amplifier, VR1)3 stepsAdjust the gantry servo-amplifier offset23 stepsAdjust the gantry tilt-stop angles (encoder calibration)5 stepsCheck the gantry rotation speed7 steps
View all Activion16 (TSX-031A) guides

Source: 2D201-112EN*D §3.7.7 'Checking the rotation speed voltage sent from KGTSM PWB to the servo speed amplifier' (pp. 266–267). Preview re-authored by FSELIB — the full procedure with figures and steps is in the paid service manual.