SMC Networks ITV2000 series, Простое руководство по программированию, Страница: 3 / 7

Microprocessor-Controlled Electro-Pneumatic Regulator ITV2000
E A S Y P R O G R A M M I N G G U I D E
Page 3
last updated 11/03/03 10:05 AM
I
NPUT
S
IGNAL
•
C
URRENT
S
IGNAL
T
YPES (ITV20 -0 , ITV20 -1 )
Supply Voltage VS Input Signal A
24VDC (ITV20 0)
12VDC (ITV20 1)
4~20mA (ITV20
-0
)
0~20mA (ITV20 -1 )
•
V
OLTAGE
S
IGNAL
T
YPES (ITV20 -2 , ITV20 -3 )
Supply Voltage VS Input Signal V
IN
24VDC (ITV20 0)
12VDC (ITV20 1)
0~5VDC (ITV20 -2 )
0~10VDC (ITV20 -3 )
K
EYLOCK
F
EATURE
locked unlocked
The ITV has a key lock feature, allowing the user to disable the setting keys. This
is helpful in preventing unauthorized setting changes. By default, the keys are locked
when power is turned on. The keys must be unlocked to modify the setting information.
The display will show
L
OC
if a key is pressed while the keys are locked.
T
O
U
NLOCK
:
¬
Press and hold the down key for 2 seconds or longer. The display will blink L
OC
.
­
Press the set key to unlock the keys, or
®
Press the up key to cancel.
T
O
L
OCK
:
¬
Press and hold the up key for 2 seconds or longer. The display will blink U
NL
.
­
Press the set key to lock the keys, or
®
Press the down key to cancel.