Page number 60
Phased-out products | 60 Possible combinations CB6OBMe – with transformer has been approved for CLASS I operation incl. CLASS I cables (with pigtail for earth). CB6OBMe – with SMPS is not approved for CLASS I operation, basically because of the design of the housing. However the PCB contains 2 x fuses (phase, neutral) as required for CLASS I operation. Duty Cycle Guard CB6OBMe incl. SMPS comes as default with DCG (Duty Cycle Guard) to protect the system. It is default set to 1020As, equal to approx. 2 min continuous use at 8A. Example: If 10 % duty cycle @ max. current is exceeded the CB shuts down. If instead an application is rated for 10 % duty cycle @ 50 % of max. current – the duty cycle limit may be increased to 20 %. If the CB shuts down it will recover for operation after 240 seconds (4 min.)! Battery Operation BATTERY LEVELS BATTERY HIGH: > 20 V - normal BATTERY MEDIUM: 17.5 - 20 V - alarm BATTERY LOW: < 17.5 V - critical • If the battery voltage is at ‘medium level’ a battery alarm beeps constantly when activating the HB/ACx. (Medium level means that battery charging is necessary to maintain the best possible lifetime. Medium level battery limit corresponds to approx. 17.5-20 V (+/- 5 %). • If the battery voltage is at ‘low level’ (< 17.5 V), the battery alarm function shuts down all operation immediately. (If trying to operate the system anyway, the battery could become deeply drained or the actuator system could be damaged. When at critical battery level, there is a risk that the processor will incorrectly monitor end of stroke. Crashing the actuator could be a result. Critical level limit corresponds to approx. < 17.5 V (+/- 5%). • If battery back-up is applied it only commences battery charging when it is connected to the mains. • A battery stored at 25 °C has to be recharged every 6 - 7 months. • Prior to first use of LINAK batteries, please make sure that they are charged for 24 hours in order to reach proper function and prolong the lifetime of the batteries. • The longest lifetime is obtained when the battery is fully charged. If Backlight supported HB is used • When CB6OBMe is powered by mains voltage: - If an HB button is activated the backlight illuminates fully. When the HB button is released the light is dimmed again after approx. 10 - 15 sec. Backlight turns completely off after 2 min. Exception: While charging the HB backlight will stay on dimmed until charging is finished. • When CB6OBMe is powered by battery: - If a HB button is activated the backlight illuminates fully. When the HB button is released the light is dimmed again after approx. 10 - 15 sec. Backlight turns completely off after 2 min.
Page number 61
Phased-out products | 61 1st Failure safe monitoring - transformer version Is made in two ways on the OBMe platform. It may be difficult to observe the LED status (hardware) if CB6 OBMe is placed under a bed, therefore it is now monitored by software as well. • CB6 OBMe is equipped with a 1st Failure safe indication controlled by HW (power request). At normal operation (no failure observed) the power LED turns yellow when a HB button is activated. If the LED has turned yellow AND the HB has NOT been activated, it indicates that a failure has occurred (1 st Failure). NOTE: Even though the LED illuminates yellow before the HB is activated it is possible to operate the CB6, however the 1st. Failure is somehow still in the CB and must be removed to prevent a further failure causing a hazardous failure to happen. • To meet the safety requirements the device must have a dual switch safety concept. Further information about OpenBus™ safety concepts, please contact your local LINAK. • The safety function must be monitored and this monitoring is implemented in the SW. In case of a failure (fatal error) any further operation of any channels are prevented. At a fatal error the CB6 OBMe responds with the following information: • Failure indication: all ACO LEDs are blinking The CB6 OBMe buzzer beeps shortly if a handset is activated The error can be reset by activating H0 and H1 OR H10 and H11 or H20 and H21 (standard SW only) on a handset.
