Yaskawa AC Drive Z1000 Bypass Technical Manual Manuale Utente Scaricare il pdf (Pagina 143)

d2: Frequency Upper/Lower Limits

Upper and lower frequency limits prevent motor speed from going above or below levels that may cause resonance or

equipment damage.

d2-01: Frequency Reference Upper Limit

Sets the maximum frequency reference as a percentage of the maximum output frequency. This limit applies to all frequency

references.

Even if the frequency reference is set to a higher value, the drive internal frequency reference will not exceed this value.

No. Parameter Name Setting Range Default

d2-01 Frequency Reference Upper Limit 0.0 to 110.0% 100.0%

Note: This value is overwritten by the energy savings function. When energy savings is enabled, (Z1-16 = 1 or 2), this value will be set to 110%.

When energy savings is not enabled (Z1-16 = 0), the bypass controller will not change this value.

d2-02: Frequency Reference Lower Limit

Sets the minimum frequency reference as a percentage of the maximum output frequency. This limit applies to all frequency

references.

If a lower reference than this value is entered, the drive will run at the limit set to d2-02. If the drive is started with a lower

reference than d2-02, it will accelerate up to d2-02.

No. Parameter Name Setting Range Default

d2-02 Frequency Reference Lower Limit 0.0 to 110.0% 0.0%

Internal frequency

reference

d2-01

Operating

range

Frequency Reference Upper Limit

Set frequency reference

Frequency Reference Lower Limit

d2-02

Figure 5.18 Frequency Reference: Upper and Lower Limits

d2-03: Master Speed Reference Lower Limit

Sets a lower limit as a percentage of the maximum output frequency that will only affect a frequency reference entered from

the analog input terminals (A1 or A2) as the master speed reference. This is unlike parameter d2-02, which affects all frequency

references regardless of their source.

Note: When lower limits are set to both parameters d2-02 and d2-03, the drive uses the greater of those two values as the lower limit.

No. Parameter Name Setting Range Default

d2-03 Master Speed Reference Lower Limit 0.0 to 110.0% 0.0%

5.5 d: Reference Settings

YASKAWA ELECTRIC SIEP YAIZ1B 01D YASKAWA AC Drive – Z1000 Bypass Technical Manual

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Programming

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Yaskawa AC Drive Z1000 Bypass Technical Manual Manuale Utente Pagina 143