7 h: terminal functions – Yaskawa Z1000U HVAC Matrix Bypass User Manual

Page 172

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Status

Description

Open

Output frequency or motor speed and frequency reference are both outside the range of L4-03 ±L4-04.

Closed

Output frequency or motor speed and the frequency reference are both within the range of L4-03 ±L4-04.

Note:

The detection level L4-03 is a signed value; detection works in the specified direction only.

Frequency reference

+

L4-04

Frequency reference – L4-04

L4-03

L4-03

+

L4-04

L4-03 – L4-04

Frequency reference

0 Hz

OFF

OFF

ON

ON

Frequency reference

During

Forward

Output frequency

Output frequency

User Set
Speed Agree 2

Figure 5.27 User-Set Speed Agree 2 Example with a Positive L3-04 Value

Setting 15: Frequency Detection 3

The output opens when the output frequency or motor speed rises above the detection level set in L4-03 plus the detection

with set in L4-04. The terminal remains open until the output frequency or motor speed falls below the level set in L4-03. The

detection level L4-03 is a signed value; detection works in the specified direction only.

Status

Description

Open

Output frequency or motor speed exceeded L4-03 plus L4-04.

Closed

Output frequency or motor speed is below L4-03 or has not exceeded L4-03 plus L4-04.

L4-04

Frequency
detection 3

ON

OFF

L4-03

Output Frequency

or Motor Speed

Figure 5.28 Frequency Detection 3 Example with a Positive L3-04 Value

Setting 16: Frequency Detection 4

The output closes when the output frequency or motor speed is above the detection level set in L4-03. The terminal remains

closed until the output frequency or motor speed falls below L4-03 minus the setting of L4-04.

Status

Description

Open

Output frequency or motor speed is below L4-03 minus L4-04 or has not exceeded L4-03.

Closed

Output frequency or motor speed exceeded L4-03.

Note:

The detection level L4-03 is a signed value; detection works in the specified direction only.

5.7 H: Terminal Functions

172

YASKAWA SIEP YAIZ1D 01A Z1000U HVAC MATRIX Drive Bypass Technical Manual

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