Vario-Pro® – ”Software instead of hardware“ – aptly describes the unique fan concept, equipped at the plant with tailor-made intelligence for cooling electronics. – Flexible configuration using software, allows quicker availability, sampling from the factory and the ability to supply customer-specific solutions in any quantity. Vario-Pro-Features Externally Speed setting – Speed Setting via temperature, PWM or analog control voltage. On Page 94 (Speed setting). – Description of speed curve with up to 14 selectable interpolation points. Linear interpolation between the points. – 0 rpm. possible. – Recognition of sensor failure: In case of loss of sensor, the fan operates at programmable (fail-safe) speed. Alarm- and tacho functions – Optional alarm/or tacho function – Selectable alarm speed limit (with hysteresis) and alarm delay time – Latching of alarm signal – Delay only when starting or permanently active – Output signal ”High“ or ”Low“ in case of alarm – Optional alarm when temperature sensor fails. – Optional alarm in case of excess temperature. Motor management – High control accuracy due to digital motor management – Higher operating efficiency due to optimum adaption of motor hardware and software. Fan series Fan series Fan series 620 4100 NH RL 90 N 8400 N DV 4100 RLF 100 8300 5200 N RG 90 N 8200 J DV 5200 RG 125 N 3400 N 5100 N RG 160 N 3300 7100 N REF 100 3200 J 7200 N RER 101 4400 FN 6200 N RER 125 N 4300 DV 6200 RER 160 N 4200 6400 4100 N DV 6400 Speed setting with temperature – ebm-papst fans can come equipped with optional fan speed control. – Temperature, analog voltage or a PWM can serve as control variables. Externally Temperature sensor Type T Internallys Temperature sensor Type I – Ext. NTC type LZ370 is required (not included in the standard scope of delivery). – NTC integrated in fan hub. Fan Fan Customer Customer (+) Power (+) Power (+) Internal Ref. (+) Internal Ref. Input Input NTC NTC (-) 0V Ground (-) 0V Ground Standard speed-temperature curve for type T and type I Optionally available with user-selectable temperature-speed curve control nmax nmax nmin S S nmin S 30°C nmin ≈ 1/2 nmax Tmin ≈ 30 °C; Tmax = 50 °C 50°C S Tmin nmin ≈ 800 1/min Tmin ≈ 5 °C Tmax nmax model-dependent Tmax ≤ 85 °C, model-dependent Speed setting with control voltage or PWM Speed setting via control voltage Type A – Optional control range 0 ... 10 V – Standard control range 0 ... 5 V Customer Fan Fan Customer (+) Power (+) Power Input Input (+) Internal Ref. (-) 0V Ground (-) 0V Ground Fan Speed setting via PWM Type P Customer (+) Power – Speed setting via PWM signal that is user generated as a controlled variable. PWM signal: 2 KHz (0–100 %) Open collector input (+) Internal Ref. Input (-) 0V Ground Standard curve P / A Optional – selectable curve P / A nmin nmin 0 0 S0 10 % 100 % PWM 5V (Optional) 10 V A S nmax S nmax 0 0 S0 100 % 5V (Optional) 10 V PWM A