Lakeshore 335, Руководство пользователя, Страница: 55 / 172

4.2.2 Annunciators 43
|
www.lakeshore.com
4.2.2 Annunciators LED annunciators: two blue and two red LED annunciators are included to provide
visual feedback of the following operation.
Display annunciators : include symbols for sensor inputs and their respective tempera-
tures and units.
4.2.3 General Keypad
Operation
There are five basic keypad operations: direct operation, menu navigation, Number
Entry, Alpha-Numeric Entry and setting selection.
D
Direct operation:
the key function occurs as soon as the key is pressed; these
include the Setpoint , P , I , D , Manual Out , Heater Range , and All Off keys.
D
Menu Navigation:
each menu has a set of configurable parameters. Menus that
apply to multiple entities (for example, Input Setup could apply to Input A or B)
have a first level selection to determine which entity to configure. Once the first
level selection is made, the first menu parameter is displayed. The parameter
label is displayed on the top line, and the current value of the parameter is dis-
played on the bottom line. The type of setting mode for any given parameter
depends on the type of parameter highlighted. The possible setting modes are:
Number Entry, Alpha-Numeric Entry, and Setting Selection. Refer to the respec-
tive entry mode descriptions below. During menu navigation, pressing
Enter will
immediately store the new parameter value. Pressing Escape (Exit Menu) will
perform the Exit Menu function, and will
not
cancel any previous setting changes.
D
Number Entry:
allows you to enter number data using the number pad keys. Num-
ber pad keys include the numbers 0–9 , +/- , and decimal point. The Proportional
control parameter is an example of a parameter that requires number entry. Dur-
ing a number entry sequence use the number entry keys to enter the number
value, press
Enter to accept the new data. Press Escape once to clear the entry,
and press it twice to return to the Menu Navigation mode.
LED Function Refer to section
Remote
The Remote LED is on steady when instrument is in Remote mode (may be controlled via the
Remote/Local key). If the LED is not illuminated, the instrument is in Local mode.
4.6.2.1
Alarm
The Alarm LED is on steady when the alarm feature for any sensor input is turned on and the
input’s Visual parameter is set to On. It blinks when any input sensor alarms are in the
alarming state and the alarming input’s Visual parameter is set to On.
5.7
Control outputs
The control output LED is on steady when the corresponding output is in the On state (does
not apply to Monitor Out mode). It is Off when the corresponding output is in the Off state, or
is set to Monitor Out mode.
4.5.1.6
TABLE 4-4 LED annunciators
Annunciator Function
A Sensor input A
B Sensor input B
K Temperature in kelvin
°C Temperature in degrees Celsius
V Sensor units of volts
)
Sensor units of ohms
k
)
Sensor units of kilohms
Sensor units of millivolts
TABLE 4-5 Display annunciators
m
v