YASKAWA Z1000U Series Quick Start Manual page 39

A
B
B
A
C
A – SW (ON)
B – Screw (OFF)
u
24 V Control Power Supply Unit Wiring
n 24 V Control Power Supply Unit
The 24 V Control Power Supply Unit maintains drive control circuit power in the event of a main power outage. As long as
the control circuit has power, network communications and I/O data remain operational. The unit provides external power to
the control circuit only, and does not provide power to the main circuit of the drive.
It is possible to read fault and parameter data in the drive via the operator or network communications when the drive switches
to the 24 V Control Power Supply Unit as a back-up power supply.
Note: Parameter settings cannot be changed without drive main circuit power regardless of whether the control circuit has enough power to operate.
n
24 V Control Power Supply Unit Location
A
A –Power Supply Terminal Block TB1
YASKAWA ELECTRIC TOEP C710636 11E Z1000U HVAC MATRIX Drive Quick Start Guide
Figure i.29 EMC Filter Switch Location
(Drive Models 4E0302 to 4E0414 and 4W0302 to 4W0414)
Figure i.30 24 V Control Power Supply Unit Location
(Models 2P0028, 2W0028, 4P0011 to 4P0034, and 4W0011 to 4W0034)
n1 p1
C – Terminals p1 and n1
i.4 Electrical Installation
39