Danfoss PLUS+1 SC0XX-1 Series Technical Information

Contents

GeneralDescription CommentConfiguration Sourcing or sinking.Type (Linear vs. PWM) PWMOperating modes Programmable: closed loop current or open loop voltage (duty cycle).Dual coil PCPs Compensated for induced currents in a non-driven coil (closed loop mode).Short circuit to ground Output fully protected against damage and fault detected.Mode selection (current or voltage) and full scale currentrangesProgrammable.Do not connect a digital output to battery+ (back drive) without a series diode.PLUS+1® PWM output circuits are not designed to be used as inputs. Output current feedback readingsshould be used for fault checking only.W WarningUnintended movement of the machine or mechanism may cause injury to the technician or bystanders.The module will be powered up if battery voltage is applied to the module's output pin. To protectagainst unintended movement, secure the machine.C CautionWarranty will be voided if module is damaged by significant current driven back through an output pin.SpecificationsDescription Units Minimum Maximum CommentFull scale proportionalcurrent outputmA 10 3000 The current may accidently be exceeded in openloop mode. If the current exceeds the trip point, theoutput will be latched off.Output voltage, 100% duty cycle Vdc 0 Vbatt-1Output resolution of 3 A mA 0.25Repeatability of full range % of full scale 0.5Absolute accuracy of full range % of full scale 0.3Output settling time ms 100 Depends on load characteristics.PWM frequency Hz 33 4000 and20,000Dither frequency Hz 40 250 Increased in steps, see module API.Dither amplitude A 0 0.5 Increased in steps, see module API.Over-current trip point A 5 7.3 There is over-current protection built into eachoutput driver. If the instantaneous current exceedsthe trip point, the driver is latched off. GUIDEapplication software can reset the latch and attemptto drive current again.For each PWM output there are two switches in series for sourcing current/voltage (the high-side of thehalf bridge has two switches). One switch is controlled and monitored by the secondary controller, andthe other is controlled and monitored by the primary processor. The secondary controller can monitorthe condition of the redundant switch under its control with a digital voltage feedback signal. Eachsourcing PWM output can be disconnected from its supply voltage at any time by the secondarycontroller with this redundant switch. When the redundant switch is disabled it must remain disabled bythe kernel for 250 ms before the secondary controller's application is allowed to re-enable the redundantswitch. When the switch controlled by the secondary controller is enabled then the PWM outputs areTechnical InformationPLUS+1 SC0XX-1XX Controller FamilyOutputs14 | © Danfoss | June 2016 L1415500 | BC00000235en-US0201