ECD TC80, Инструкция по эксплуатации, Страница: 28 / 53

Page 27 Model TC80
3.3.1 C
ONFIGURE
4-20
M
A
OUTPUT RANGE

Double press any key except the HOME key to enter the HOME Menu. Follow
the path below to set the 4-20 mA range.

HOME Menu → Press CONFIG → XMTR → OUTPUT → 4-20 (1)(2) → PV or
TEMP

Press CHANGE to enter New Values.

Choose 4 mA value, press OK

Enter value using
▲
or
▼
and NEXT to move to the next digit, press OK→Back

Choose 20 mA value, press OK,

Enter value using
▲
or
▼
and NEXT to move to the next digit, press OK→Back

Press BACK to return to the CONFIGURE 4-20 mA screen or HOME to return to
the HOME Menu screen.
3.3.2 C
ONFIGURE
4-20
M
A F
AULT
C
ONDITION AND
C
AL

In the CONFIGURE 4-20 mA screen, Press MORE → FAULT or

Choose Low Fault 3.5 mA or Hi Fault 22 mA or NONE , (default setting NONE ),
Press OK

Press BACK → CAL , (enter PW 0000) connect DVM to 4-20 mA line, Press 4.00
mA then adjust value to the DVM reading, Press 20.00 mA and adjust value to
the DVM reading. The 4-20 mA output is calibrated.
3.3.3 C
ONFIGURE
A
LARM
R
ELAYS
(R
ELAYS
O
PTIONAL
)

HOME Menu → Press CONFIG → XMTR → OUTPUT → RELAYS→RLY1

Choose the ALARM , TIMER , FAULT or DISABLE mode for Relay 1

ALARM Displays:
o
SET POINT ON : The Process Variable Value that activates the relay.
o
EXPIRATION : Enter a time that should not be exceeded before the PV
should have changed enough to activate the OFF set point. At the
Expiration time the relay is deactivated and a Fault condition is
initiated. Fault: Relay 1 Time expired: Cause: Loss of reagent, failed
sensor ….
o
Delay ON : The amount of time the PV must remain above/below the
set point before the relay activates.
o
SET POINT OFF : The Value of the process variable that deactivates the
relay.

SET POINT OFF > Set Point → Low Set Point

SET POINT OFF < Set Point → Hi Set Point
o
Delay OFF : The amount of time the PV must remain above/below the
hysteresis point before the relay deactivates.
o
STATE : Energize (relay is energized on activation)/ De-energize (relay
is de-energized on activation)

TIMER activates the relay periodically for a specific duration, user configured
period and duration

FAULT sets the relay condition to a de-energize state and NC relay closes in
response to a Fault condition or power failure.