©Yokogawa Corporation of America
2 Dart Road, Newnan, GA 30265
770-254-0400
IM 61A YHC1-E-A
1st Edition: Feb. 2008
Page 5 of 34
Thumb operated keys
Up, Select, and Down side keys provide convenient alternate methods of menu navigation. Use these in
addition to Soft keys and numbered HART menu lines to make menu navigation fast and easy.
= Up = Prev
= Select, Edit
Do not use these keys when the symbol is displayed.
= Down = Next
GENERAL OPERATION
Power options
The YHC 4150X Intrinsically Safe unit must be powered by approved AA alkaline batteries (see the
“Hazardous Area Use” section of this manual and the I.S. Control Drawing shipped with each YHC 4150X
for more information). AA alkaline batteries are standard with the YHC shipment. For bench top
applications and download operations, the AC adapter (P/N Z9B000007 included with each YHC) is
recommended. The AC adapter is only for use in safe areas.
Located in the upper right corner of the display, this icon displays the
remaining battery power. Fresh batteries produce a full black cell body. As the power
drains, the black segment retreats indicating remaining power.
When the YHC is used with the optional AC adapter (P/N Z9B000007), the battery circuit is
bypassed and a wall plug icon replaces the battery icon on the display header. For AC power use,
the AC adapter is connected to the Communication / AC Adapter Dongle and then the dongle is
connected to the fitting on the top of the YHC.
NOTE: Power icons may temporarily disappear during certain HART Communication operations
Communication / AC Adapter Dongle
The Communication / AC Adapter Dongle, included with each YHC, is used to connect the AC adapter to
the YHC when needed. The dongle is also used to connect the YHC to a PC for serial communications. See
the “Updating YHC 4150X Firmware and DOFs” and “Documenting HART Configurations with Yokogawa
DMS Software” sections of this manual for more information on communications.
Note: For YHC 4150X Intrinsically Safe units, the Communication / AC Adapter Dongle can only be
used in a safe area. See the “Hazardous Area Use” section of this manual and the Intrinsic Safety
Control Drawing in the Appendix of this manual for more information.
BUSY
To PC via serial cable, P/N ZA900447-
00052, included with shipment
To AC Adapter, P/N Z9B000007,
included with shipment
To mating Communication / AC
Adapter connector on the YHC
Communication / AC Adapter
Dongle, P/N Z4150-10A
