No.
(Addr.
Hex)
Name Description Values Page
Z3-04
(8503)
Serial Communications
Parity Select
Selects the bypass serial communications parity.
0: No Parity
1: Even Parity
2: Odd Parity
Default: 0
Range: 0 to 2
215
Z3-05
(8504)
Serial Communications
Fault Select
Selects the action to take when a serial communications fault is detected.
0: Ignore. A serial communications loss will result in no action being taken.
1: Alarm only.
2: Fault with EF0. An EF0 will be sent to the drive. If running in Bypass mode,
the bypass contactor will NOT open and the motor will keep running.
3: Fault with EF0 and Open Contactors. An EF0 fault will be sent to the drive
and the bypass contactor (K3) will be opened.
4: Alarm and run at preset speed set in Z3-10. Display AL14 alarm on
Operator.
Default: 1
Range: 0 to 4
215
Z3-06
(8505)
Serial Communications
Fault Time Select
Sets the time allowed to elapse since receiving serial communications before
triggering a communications fault.
A setting of 0.0 will never time out.
Default: 2.0 s
Min.: 0.0
Max.: 99.9
215
Z3-07
(8506)
Serial Communications
Receive to Transmit Wait
Time
Sets the time to delay a serial communications response to a serial
communications command.
Default: 5 ms
Min.: 0
Max.: 99 ms
215
Z3-08
(8507)
BACnet Device Object
Identifier 0
BACnet only.
Sets the least significant word of 22-bit virtual address.
Default: 1
Min.: 0
Max.: FFFF
216
Z3-09
(8508)
BACnet Device Object
Identifier 1
BACnet only.
Sets the most significant word of 22-bit virtual address.
Default: 0
Min.: 0
Max.: 003F
216
Z3-10
(8509)
Cable Loss Preset Frequency
When a serial communications fault is detected and Z3-05=4, the resulting
value will become the frequency reference.
Default: 0
Min.: 0.0 Hz
Max.: 60.0 Hz
216
Z3-11
(850A)
Communication Fault
Detection Selection
Communication Fault Detection Selection
0: Disabled. Serial communications fault detection is completely disabled.
1: Enabled. Behavior defined by Z3-05.
Default: 1
Range: 0, 1
216
Z3-12
(850B)
<1>
Network Digital Input Select
Enables and disables control of the digital inputs over a network. Wiring to
the physical digital input is not required.
0: Disable
1: Enable
Default: 0
Range: 0, 1
216
Z3-13
(850C)
<3> <4>
BACNet Command Register
Retention
Determines whether to restore the frequency reference, bypass command, or
both upon the reapplication of power after losing power.
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.
0: Disable
1: Reference Only
2: Run/Stop Only
3: Ref & Run/Stop
Default: 0
Range: 0 to 3
217
<1> Available in bypass controller software versions VST800298 and later.
<2> Selecting settings 0, 1, or 2 will trigger an oPE29 error when using BACNet communication in bypass controller software versions VST800400
and later.
<3> Available in bypass controller software versions VST800400 and later.
<4> 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).
B.14 Z: Bypass Parameters
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
353
B
Parameter List
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