XtrapulsCDI range CINFRANOR XtrapulsCDI range CINFRANOR XtrapulsCDI range Safe Torque Off specifications

Safe Torque Off specifications – XtrapulsCD1 range ! This is a specific manual describing the Safe Torque Off function of the XtrapulsCD1 amplifier range having output capability suitable for driving AC brushless sinusoidal servo motors. It must be used in conjunction with the Installation and User manuals of the various XtrapulsCD1 amplifiers (XtrapulsCD1-a, XtrapulsCD1-k, XtrapulsCD1-pm). Instructions for storage, use after storage, commissioning as well as all technical details require the MANDATORY reading of the manual before getting the amplifiers operational. Maintenance procedures should...

Safe Torque Off specifications – XtrapulsCD1 range  Information and sorting instructions regarding INFRANOR Waste category Recyclable waste Recyclable waste Recyclable waste Recyclable waste Electronical boards and components WEEE (Waste Electronic and Electrical Equipment) Dangerous industrial waste Waste management Waste disposal centre / collection point of recyclable waste Waste disposal centre / collection point of recyclable waste Waste disposal centre / metal collection point Waste disposal centre / metal collection point France: http://www.ecosystem.eco/fr/sousrubrique/solutions Abroad:...

Safe Torque Off specifications - XtrapulsCDI range CINFRANOR

Safe Torque Off specifications – XtrapulsCD1 range Chapter 1 - General description Safe Torque Off (STO) definition according to the EN 61800-5-2 standard: "Power, that can cause the rotation of a motor (or displacement in the case of a linear motor), is not applied to the motor. The drive will not provide energy to the motor which can generate torque (or force in the case of a linear motor)". The STO function corresponds to an uncontrolled stopping in accordance with the stop category 0 of the EN 60204-1 standard. The STO function may be used where power removal is required to prevent an unexpected...

Safe Torque Off specifications – XtrapulsCD1 range Chapter 2 - Specifications 1 - FUNCTIONAL DIAGRAM The "Safe Torque Off" function allows to keep the motor shaft free by avoiding the IGBT module commutation. This is achieved by means of two techniques: - IGBT command supply removal, - PWM removal. incoherent state IGBT Fault displayed & memorized Undervoltage Fault displayed User Monitoring Subsystem incoherent state Monitoring Subsystem Monitoring & Safety Subsystems are parts of the drive integrated safety function and fulfill the EN13849-1 category 3 requirements. User Monitoring Subsystem...

Safe Torque Off specifications - XtrapulsCDI range OINFRANOR2 - COMMAND SYSTEM CONCEPTION 2.1 - SAFETY INSTRUCTIONS The integration of the STO function must be the result of a risk analysis of the complete machine. All control components must comply with the requirements of this risk analysis. Installing and commissioning of safety functions must be performed by skilled personnel only. Short-circuit avoidance: Install the drive in a control cabinet with a minimum IP54 protection. Avoid control signals proximity. Any short-circuit between two control signals must be detected: - the short circuit...

Safe Torque Off specifications – XtrapulsCD1 range STO connector location Drive top view STO connector on 230 V and 400/1.8 to 7.2 drives drives 2.3 - TIMINGS The STO function is based on forcibly guided relays technology. Its response time is given by the typical Operate Time /Release Time of the relay: 12 ms / 20 ms. However, an additional delay of 40 ms after STO inputs are high is necessary before enable/inhibit signal activation as mentioned on the following chronogram: Drive state Safe:Undervoltage displayed ready Fault state: IGBT fault displayed

Safe Torque Off specifications – XtrapulsCD1 range The STO function has two feedbacks: the "STO_OUT" contact and the Undervoltage fault. The Undervoltage fault cannot be used as a safe information. Only the output "STO_OUT" is a safe output. An incoherent state detected between inputs STO1 and STO2 leads to a fault state. The displayed code is "IGBT module fault". Take care to automatic restart: The undervoltage event prevents XtrapulsCD1-k and pm in profibus mode to restart automatically when STO1 and STO2 go high. On XtrapulsCD1-a and XtrapulsCD1-pm drives in standalone mode, additional measures...

Safe Torque Off specifications - XtrapulsCDI range The STO function is based on forcibly guided contact relays. The reliability of this technology is well-known and has been well-proved in the past. However, the global lifetime of this technology is limited by the mechanical lifetime of 107 cycles. If the application requires very high frequency cycles on STO function enabling and disabling, the designer must verify that the lifetime will be compatible with his application: MTBF = 107 / (number of cycles per year) If the calculated MTBF is too low according to the machine lifetime, the XtrapulsPac...

Safe Torque Off specifications – XtrapulsCD1 range 2.8.1 - Example 1: Stop category 0 according to EN 60204-1 (complying with EN13849-1 category 3). Low inertia axis application / high resistive torque Please note that the motor control must be disabled either by means of a network command or by means of the Inhibit/Enable input.

Safe Torque Off specifications – XtrapulsCD1 range 2.8.2 - Example 2: Stop category 1 according to EN 60204-1 (complying with EN13849-1 category 3). High inertia axis application / low resistive torque In the following diagram, only the STO integration is safe. The deceleration ramp is not safe according to EN13849-1 because it uses a common drive function. XtrapulsCD1-k connection example: In the connection diagram example above, the PILZ safety relay orders the servodrive to decelerate by the INHIBIT signal, and after a safety delay of 0.5 s, it activates the STO function of the drive. Note...