YASKAWA Z1000 Technical Manual page 350

Ac drive bypass for hvac fans and pumps 208 v: 1/2 to 100 hp 480 v: 3/4 to 250 hp
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B.14 Z: Bypass Parameters
No.
(Addr.
Name
Hex)
Z1-40
(85ED) Auto Transfer Wait
Time
Z1-41
Hand Speed Reference
(85EE)
Selection
<3>
Z1-42
(85EF)
Bypass Device Type
<5>
Z1-43
(85F0)
Soft Start Time Delay
<5>
Z1-44
Soft Start Ramp Down
(85F1)
Timeout
<5>
Z1-50
Bypass Unbalanced
(85F7)
Current Detection
<3>
Level
Z1-51
Bypass Unbalance Trip
(85F8)
Time Detection Level
<3>
Z1-52
(85F9)
Bypass Phase Rotation Byp Phs Rotation
<3>
Z1-53
Load Verification Fault
(85FA)
Select
<5>
Z1-54
(85FB)
LCD Contrast Control LCD Contrast
<5>
Z1-55
Welded K3 Contactor
(85FC)
Fault Select
<5>
<1> Default is 0 in bypass controller software versions VST800297 and earlier.
<2> Values are given in Hz, but actual values are dependent upon unit settings using drive parameters o1-03, o1-09, o1-10, and o1-11.
<3> Available in bypass controller software versions VST800298 and later.
<4> Default is 1 in bypass controller software versions VST800299 and earlier.
<5> Available in bypass controller software versions VST800400 and later.
350
LCD Display
If Auto Transfer is enabled and a drive fault is detected, the
<5>
bypass controller will wait this length of time before switching
AutoXfr WaitTime
to bypass.
Selects the frequency reference source when in Hand Mode.
Hand Spd Ref Sel
0: Parameter Z1-09
1: Analog
Selects the soft starter device type when used with a bypass.
0: Contactor
Byp Device Type
1: Soft Starter
2: SftStr Ramp Ctrl
Sets the delay time between closing contactor K3 to energizing
SoftStr Time Dly
the soft starter.
Sets the maximum wait time for the current to drop below 5% of
E2-01 after removing the soft starter Run command.
SftStr Rmp Dn TO
The soft starter digital output turns off if the current does not fall
below below 5% of E2-01 within the set time.
Sets the current unbalance level between phases when operating
Byp Unbal Level
in Bypass Mode.
Sets the trip time for an unbalance condition operating in Bypass
Mode.
Byp Unbal Time
Note:
Determines the action to take when Bypass Mode phase rotation
is incorrect.
0: Disabled
1: Alarm
2: Fault
Enables and disables verification that the motor is running when
commanded to run.
Load Verify
0: Disabled
1: Enabled
Sets the contrast of the LCD operator display on the bypass.
Enables and disables detection of K3 "welded contactor"
condition.
Welded Contactor
0: Disabled
1: Enabled
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
Description
Setting this parameter to 0.0 will disable unbalance
detection.
Values
Page
Default: 0.0 s
Min.: 0.0
205
Max.: 300.0
Default: 0
205
Range: 0, 1
Default: 0
206
Range: 0 to 2
Default: 2.0 s
Min.: 0.0 s
206
Max.: 60.0 s
Default: 15.0 s
Min.: 1.0 s
206
Max.: 60.0 s
Default: 25.0%
Min.: 5.0
206
Max.: 25.0
Default: 5.0 s
Min.: 0.0
207
Max.: 30.0
<4>
Default: 0
207
Range: 0 to 2
Default: 0
207
Range: 0, 1
Default: 3
208
Range: 1 to 5
Default: 0
208
Range: 0, 1

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