SIGMATEK CTMS Series Servo Drives — CTMS020

Technical Dossier

Product Details And Specifications

SIGMATEK CTMS Series: Comprehensive Module Range and Technical Overview

The SIGMATEK CTMS series represents a core product line within SIGMATEK's LASAL motion control ecosystem, engineered for high-precision servo drive applications in continuous-process heavy industries. Deployed across chemical processing plants, refinery automation systems, and nuclear facility auxiliary control loops, the CTMS series provides deterministic axis control with integrated safety logic. Its compact form factor and standardized backplane interface have made it a preferred drive module in multi-axis coordinated motion systems across European and Asian industrial installations. The series operates within SIGMATEK's proprietary LASAL Class software environment, enabling object-oriented motion programming with real-time EtherCAT synchronization.

The Evolution of CTMS Architecture

The CTMS series was introduced as part of SIGMATEK's second-generation motion control platform, succeeding earlier standalone drive units that lacked integrated fieldbus capability. Early CTMS variants relied on CANopen for axis synchronization, which imposed cycle-time limitations in high-axis-count applications. Subsequent hardware revisions introduced EtherCAT as the primary synchronization bus, reducing jitter to sub-microsecond levels and enabling synchronous multi-axis interpolation across 64+ axes on a single network segment.

The transition from CANopen to EtherCAT also changed the physical connector layout and firmware architecture, creating a compatibility boundary between pre-EtherCAT and post-EtherCAT CTMS units. Integrators maintaining legacy installations must verify firmware version compatibility before substituting modules across this boundary. SIGMATEK's LASAL software stack maintains backward-compatible project files, but drive firmware must be matched to the hardware revision. Units manufactured after 2014 carry the EtherCAT-native architecture; earlier units require a firmware bridge adapter for mixed-generation systems.

As the CTMS series has entered its mature lifecycle phase, SIGMATEK has shifted primary development resources to the successor DIAS Drive platform. CTMS modules remain in active production for existing customer base support, but new system designs are directed toward DIAS. This lifecycle position makes long-term spare parts availability a critical operational concern for facilities running CTMS-based motion systems.

CTMS Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the SIGMATEK CTMS servo drive series, classified by axis count, current rating, and interface generation:

CTMS020: Single-axis servo drive, 20A continuous output, EtherCAT interface, 48–400V DC bus.
CTMS040: Single-axis servo drive, 40A continuous output, EtherCAT interface, extended thermal rating.
CTMS060: Single-axis servo drive, 60A continuous output, high-inertia load compensation.
CTMS080: Single-axis servo drive, 80A peak current, reinforced IGBT stage for heavy-duty cycles.
CTMS020-2: Dual-axis servo drive module, 20A per axis, compact dual-channel backplane mount.
CTMS040-2: Dual-axis servo drive, 40A per axis, synchronized EtherCAT dual-loop control.
CTMS010: Single-axis servo drive, 10A continuous, low-power auxiliary axis applications.
CTMS100: Single-axis high-current drive, 100A rating, for large-frame servo motor integration.
CTMS020-S: Safety-rated variant of CTMS020, SIL2-certified safe torque off (STO) function.
CTMS040-S: Safety-rated 40A drive with STO and safe stop 1 (SS1) integrated logic.
CTMS020-CANopen: Legacy CANopen interface variant, pre-EtherCAT generation, 20A rating.
CTMS040-CANopen: Legacy CANopen interface, 40A, compatible with first-generation LASAL projects.
CTMS060-S: 60A safety-rated drive, SIL2 STO, for press and forming machine applications.
CTMS020-DC: DC-bus input variant, 20A, for common DC bus multi-drive cabinet configurations.
CTMS040-DC: DC-bus input, 40A, shared regenerative braking topology support.
CTMS-PSU24: Dedicated 24V auxiliary power supply module for CTMS backplane logic rail.
CTMS-BRK: External braking resistor interface module for CTMS series high-deceleration cycles.

Sourcing Hard-to-Find & Obsolete CTMS Series Parts

DriveKNMS maintains a dedicated inventory program for SIGMATEK CTMS series modules, with particular focus on legacy CANopen-interface variants and early-production EtherCAT units that are no longer available through standard distribution channels. As SIGMATEK has progressively shifted production capacity toward the DIAS Drive platform, lead times for CTMS replacement units through OEM channels have extended significantly, in some cases exceeding 26 weeks for low-volume SKUs.

DriveKNMS sources CTMS modules through verified secondary market channels, including decommissioned equipment from European automotive and chemical plant refurbishment projects. All units are inspected, tested, and documented before entry into inventory. For facilities operating under planned maintenance schedules, DriveKNMS offers consignment stocking agreements that reserve specific CTMS SKUs against future demand, eliminating unplanned downtime risk from parts unavailability.

For obsolete CANopen-generation CTMS units, DriveKNMS also provides cross-reference analysis to identify compatible EtherCAT-generation replacements where firmware and mechanical interfaces permit substitution without system redesign.

Quality Control for the CTMS Range

CTMS series modules incorporate a multi-layer backplane bus architecture that requires specialized test procedures beyond standard power-on verification. DriveKNMS applies the following test protocol to all CTMS units processed through its facility:

Each unit undergoes DC bus insulation resistance testing at 500V to verify IGBT stage integrity before any power application. EtherCAT communication is validated using a dedicated LASAL test environment that exercises the full PDO/SDO object dictionary and confirms cycle-time compliance at 250μs and 500μs network intervals. For dual-axis variants (CTMS020-2, CTMS040-2), both channels are tested independently and in synchronized operation to confirm cross-channel isolation. Safety-rated variants (CTMS020-S, CTMS040-S, CTMS060-S) undergo STO function verification per IEC 62061 test procedures, with documented proof-test interval compliance. Thermal imaging is applied during load testing to identify degraded power components not detectable under no-load conditions. All test results are logged and provided with each unit as a traceable quality record.