YASKAWA Z1000U Technical Manual page 193

n Z3-11: Communication Fault Detection Selection
No.
Z3-11
Setting 0: Disabled
Ignore setting in Z3-05.
Setting 1: Enabled
Behavior defined by Z3-05.
n Z3-12: Network Digital Input Select
Determines whether the serial communication digital input simulation is active.
No.
Z3-12
Setting 0: Disable
Serial communications physical digital inputs are ignored.
For MEMOBUS/Modbus (Z3-01 = 0): Command Register 8402H is disabled.
For Metasys N2 (Z3-01 = 1): Binary Outputs B05, B06, B07, B08, and B09 are disabled.
For P1 Apogee (Z3-01 = 2): Points LDO44, LDO45, LDO46, LDO47, and LDO48 are disabled.
For BACnet (Z3-01 = 3): BV72, BV73, BV74, BV75, BV76, BV77, BV78, and BV79 are disabled.
Setting 1: Enable
Physical digital inputs S1 to S8 are logically OR'd with the serial communications digital inputs.
WARNING! Sudden Movement Hazard. Setting this parameter to 1 may cause the system to run unexpectedly or not stop when required
even if the physical digital input is de-energized, resulting in death or serious injury. Clear all personnel from the drive, motor and machine
area before applying power. Set this parameter to 0 to prevent serial communications from triggering undesired and unexpected system
operation.
n Z3-13: BACnet Command Register Retention
WARNING! Sudden Movement Hazard. Setting this parameter to 2 or 3 will allow the bypass unit to start before receiving a valid network
message. Clear all personnel from the drive, motor, and machine area before reapplying power. Failure to comply could result in injury to
personnel.
Determines whether to restore the frequency reference, bypass command, or both upon the reapplication of power after losing
power. The feature restores all bypass command register values except the fault reset bit.
Set Z1-06 ≠ 0 or Z1-38 = 2 to allow the bypass to start running upon application of power.
Note: 1. Parameter is effective only when Z3-01 = 3 (Serial Communications Protocol Select = BACnet), Z1-07 = 2 (Speed Reference Select =
Bypass Serial), and/or Z1-08 =2 (Run Command Select = Bypass Serial).
2. Parameter is available in bypass controller software versions VST800400 and later.
No.
Z3-13
Setting 0: Disabled
Reapplying power will not restore any BACnet objects.
Setting 1: Reference Only
Reapplying power restores the frequency reference object (AV2).
Setting 2: Run/Stop Only
Reapplying power restores various command objects including the Run commands.
Z3-13 = 2 or 3 on page 194
Setting 3: Ref & Run/Stop
Reapplying power restores the frequency reference object (AV2) and various command objects.
Restored When Z3-13 = 2 or 3 on page 194
YASKAWA SIEP YAIZ1D 01C Z1000U HVAC MATRIX Drive Bypass Technical Manual
Name
Communication Fault Detection Selection
Name
Network Digital Input Select
Name
BACnet Command Register Retention
for a list of command objects.
for a list of command objects.
5.14 Z: Bypass Parameters
Setting Range
0 to 1
Setting Range
0, 1
Setting Range
0 to 3
Refer to BACnet Values Restored When
Refer to BACnet Values
Default
1
Default
0
5
Default
0
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