Yaskawa Z1000U HVAC Matrix Bypass User Manual
Page 214
n
Z1-34: Loss of Load Drive Time
While in Drive mode, the Loss of Load detection conditions must be met for the length of time entered here before detecting
a loss of load.
No.
Name
Setting Range
Default
Z1-34
Loss of Load Drive Time
0.0 to 300.0 s
1.0 s
n
Z1-35: Loss of Load Bypass Output Current
The motor current must be equal to or less than this value to detect a loss of load.
No.
Name
Setting Range
Default
Z1-35
Loss of Load Bypass Output Current
0.0 to 999.9
0.0 A
n
Z1-36: Loss of Load Bypass Time
While in Bypass mode, the Loss of Load detection conditions must be met for the length of time entered here before detecting
a loss of load.
No.
Name
Setting Range
Default
Z1-36
Loss of Load Bypass Time
0.0 to 300.0
1.0 s
n
Z1-37: Set Time
Changes the LCD display to time setting to set the Real Time Clock.
No.
Name
Setting Range
Default
Z1-37
Set Time
0 to 2
0
Setting 0: Normal Display
Setting 1: Displays Time and Date Setting Mode
Setting 2: Reset Time
n
Z1-38: HOA Source Select
No.
Name
Setting Range
Default
Z1-38
HOA Source Select
0 to 2
0
Setting 0: Operator
The HOA keypad controls the HAND/OFF/AUTO commands.
Setting 1: Digital Inputs
The H1-oo multi-function digital input parameters control the HAND/OFF/AUTO commands.
Setting 2: Serial Communications
The serial communications protocol selected in parameter Z3-01 control the HAND/OFF/AUTO commands.
n
Z1-39: Drive/Bypass Source Select
No.
Name
Setting Range
Default
Z1-39
Drive/Bypass Source Select
0 to 2
0
Setting 0: Operator
The HOA keypad selects the Drive or Bypass as the source.
Setting 1: Digital Inputs
The H1-oo multi-function digital input parameters select the Drive or Bypass as the source.
Setting 2: Serial Communications
The serial communications protocol selected in parameter Z3-01 selects the Drive or Bypass as the source.
n
Z1-40: Auto Transfer Wait Time
Sets the length of time that the bypass controller will wait before switching to bypass when Auto Transfer is enabled and a
drive fault is detected.
5.14 Z: Bypass Parameters
214
YASKAWA SIEP YAIZ1D 01A Z1000U HVAC MATRIX Drive Bypass Technical Manual