Yokogawa EJA438 - Manual (Page 40)

IM 1C22J1-01E 7-11
7. BRAIN TERMINAL BT200 OPERATION
(6) Unit Setup for Displayed Temperature
(D30: TEMP UNIT)
When the instrument is shipped, the temperature units
are set to
degC . Follow the procedure below to
change this setting. Note that changing the unit here
changes the unit for
A20: AMP TEMP (amplifier
temperature) and A21: CAPSULE TEMP (capsule
temperature).
• Example: Change the unit for the temperature
display.
ESC
SET
D30:TEMP UNIT
deg C
< deg C >
< deg F > Use the or key to
select “deg F.”
Press the key twice to
enter the setting.
F0722.EPS
(7) Operation Mode Setup
(D40: REV OUTPUT)
This parameter allows the direction of the 4 to 20
mA output to be reversed with respect to input.
Follow the procedure below to make this change.
• Example: Change 4 to 20 mA output to 20 to
4 mA output.
ESC
SET
D40:REV OUTPUT
NORMAL
< NORMAL >
< REVERSE> Use the or key
to select REVERSE.
Press the key twice to
enter the setting.
F0723.EPS
(8) Output Status Display/Setup when a CPU
Failure (D52: BURN OUT)
This parameter displays the status of 4 to 20 mA DC
output if a CPU failure occurs. In case of a failure,
communication is disabled.
Setting of HIGH or LOW is enabled. This is done
with the pin (CN4) on the CPU assembly. See
Chapter 3 for details.
Standard specifications
The parameter is set to HIGH. If a failure, the
transmitter outputs the signal of 110% or higher. The
parameter
D53: ERROR OUT is set to HIGH from
the factory.
Optional code/C1
The parameter is set to LOW. If a failure, output
which is –5% or lower is generated. The parameter
D53: ERROR OUT is set to LOW from the factory.
• Example: Standard specifications
pin (CN4) position: H
D52: BURN OUT
HIGH
F0724.EPS
• Example: Optional code/C1
pin (CN4) position: L
D52: BURN OUT
LOW
(9) Output Status Setup when a Hardware
Error Occurs (D53: ERROR OUT)
This parameter allows the setting of the output status
when a hardware error occurs. The following three
selections are available.
(a) HOLD; Outputs the last value held before the
error occurred.
(b) HIGH; Outputs an output of 110% when an error
has occurred.
(c) LOW; Outputs an output of –5% when an error
has occurred.
Note: A hardware error means CAP MODULE FAULT of Er.01 or
AMP MODULE FAULT of Er. 02 which are shown in 7.5.2
“Errors and Countermeasures.”)
• Example: Set the output status to LOW when
a hardware error occurs.
ESC
SET
D53:ERROR OUT
HIGH
< HIGH>
< LOW>
< HOLD> Use the or key
to select “LOW.”
Press the key twice to
enter the setting.
F0725.EPS