User Manual of EM730 Series Inverter feedback amount is below the F09.25 setting and has been maintained for the PID feedback disconnection detection time (F09.26), the PID feedback will be regarded disconnected. When the 100.0% type sensor is fed back at the time of disconnection, the upper limit of PID feedback disconnection detection (F09.24) needs to be set to an appropriate value. If the feedback amount is greater than the feedback amount and has been maintained for the time corresponding to F09.26, the PID feedback will be regarded disconnected. ★ Once the feedback sensor is determined, only the corresponding detection mode can be applied.
The upper limit detection and lower limit detection cannot be enabled at the same time. within the allowable range on some occasions or at a certain moment, and the output is not When the output value and feedback value tend to be stable or the controlled quantity is allowed, the sleep status can be applied for a short time. If the controlled quantity is beyond the control range, the inverter will be awakened and generate the output. These steps will be repeated to make the controlled quantity within the allowable range and also save the energy. The detailed function description is shown in Table 7-17.
Table 7- 17 Description of Sleep/Wake-up Function 247 Function code Function code name Parameter description Unit Default setting Attribute Mailing address F09.27 PID sleep control options 0: invalid 1: sleep at zero speed 2: sleep at lower frequency limit 3: sleep with tube sealed 0 ● 0x091B F09.28 Sleep action point 0.00~100.00 (100.00 corresponds to the PID setting feedback range) % 100.00 ● 0x091C F09.29 Sleep delay time 0.0 ~ 6500.0 s 0.0 ● 0x091D F09.30 Wake-up action point 0.00~100.00 (100.00 corresponds to the PID setting feedback range) % 0.00 ● 0x091E F09.31 Wake-up delay time 0.0 ~ 6500.0 s 0.0 ● 0x091F Method Description Mode of action State Positive action (e.g.
Normal work Judgment of the sleep conditions: If the |Feedback| is greater than the sleep action point (F09.28) (necessary condition: the feedback pressure must be greater than or equal to the set pressure during