YASKAWA Z1000 Technical Manual page 206

5.15 Z: Bypass Parameters
Setting 1: Analog
An analog input sets the frequency reference when in HAND Mode.
Note: 1. Set H3-02 to "1F - HAND Mode" when using Terminal A1 for HAND Mode frequency reference.
2. Set H3-10 to "1F - HAND Mode" when using Terminal A2 for HAND Mode frequency reference.
n Z1-42: Bypass Device Type
Selects the soft starter device type when used with a bypass.
No.
Z1-42
Note: Parameter is available in bypass controller software versions VST800299 and later.
Setting 0: Contactor
Turns off the cabinet fans (if equipped) when in Bypass Mode.
Setting 1: Soft Starter
Cabinet fans (if equipped) will run in both Drive and Bypass Modes.
Setting 2: SftStr Ramp Ctrl
Allows "Soft Start" and "Soft Stop" operation if unit is equipped with a soft-starter. The soft-starter requires additional wiring
and configuration.
Note: 1. Selecting this setting will disable Energy Savings Mode.
2. This setting is available in bypass controller software versions VST800400 and later.
n Z1-43: Soft Start Time Delay
Sets the delay time between closing bypass contactor K3 to energizing the soft starter.
This parameter is effective only when Z1-42 = 2.
No.
Z1-43
Note: Parameter is available in bypass controller software versions VST800400 and later.
n Z1-44: Soft Start Ramp Down Timeout
Set this parameter to a value longer than the longest expected ramp-down time of the soft-starter.
The bypass contactor opens and the motor coasts to a stop when the output current does not drop below 5% of the E2-01 level
in the length of time set in this parameter.
This parameter is effective only when Z1-42 = 2.
No.
Z1-44
Note: Parameter is available in bypass controller software versions VST800400 and later.
n Z1-50: Bypass Unbalanced Current Detection Level
Sets the current unbalance level between phases as a percentage of parameter E2-01 when operating in Bypass Mode. This
function is used in conjunction with parameter Z1-51 to detect input or output phase loss during bypass operation.
The unbalance level is determined by measuring the RMS current in each of the output phases. The amount of current unbalance
between the phases is calculated using the following formula:
Unbalance Level = (I
(max)
When the unbalance level exceeds the Z1-50 setting for longer than the time set to Z1-51, an "FB15 – Input Phase Loss" fault
is triggered and the drive will coast to stop.
This parameter rarely needs to be changed.
Note: Parameter available in bypass controller software versions VST800298 and later.
No.
Z1-50
206
Name
Bypass Device Type
Name
Soft Start Time Delay
Name
Soft Start Ramp Down Timeout
- I ) / I × 100%
(min) (max)
Name
Bypass Unbalanced Current Detection Level
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
Setting Range
0 to 2
Setting Range
0.0 to 60.0 s
Setting Range
1.0 to 60.0 s
Setting Range
5.0 to 50.0%
Default
0
Default
2.0 s
Default
15.0 s
Default
25.0%