Omega Model CYD211 User’s Manual
Operation 3-7
Alarm Setup and Operation (Continued)
The next setting is the high alarm point indicated by a “ ” on the left of the
display. The high alarm setpoint is always set in units of Kelvin. Use the
s
or
t
key to set the high alarm setpoint. Holding the button in will increase
the rate of change. The minimum value is 0 K and the highest is 999.9 K.
Press the
Enter
key to store the high alarm setpoint.
The next setting is the low alarm setpoint indicated by a “
L
” on the left of
the display. Its setting is similar to the high alarm setpoint listed above.
Press the
Enter
key to store the low alarm setpoint.
The next setting is the alarm deadband indicated by a “
D
” on the left of the
display. Its setting is similar to the high and low alarm point settings except
that the maximum value that can be set is 99.9 K. Press the
Enter
key to
store the alarm deadband.
The final setting is alarm latching. The display will show “
” along
with the setting,
0
indicating that the latch function is turned off and a
1
indicating that it is turned on. Use the
s
or
t
key to set the alarm latching
status. Press the
Enter
key to store the alarm latching status. The display
will return to normal operation.
3.7 RELAY
SETUP
There are two relays on the CYD211 numbered 1 and 2. They are most
commonly thought of as alarm relays, but they may be manually controlled.
The relays are rated for 30 VDC and 1 A. The terminals are in the
Input/Output connector on the CYD211 rear panel. See Figure 2-3.
When using relays with alarm operation, set up the alarms first (Paragraph
3.6). Relay 1 is tied to the low alarm operation and relay 2 is tied to the high
alarm operation.
To begin relay setup press the
Select
key and use the
s
or
t
key to select
“
relay
” and press the
Enter
key. Relay 1 will be setup first indicated by
the ”
R1
” on the left of the display. Use the
s
or
t
key to select the
function of relay 1 from manually off (
r1 off
), manually on (
r1 on
), or
following the low alarm (
r1 ALA
). If the relay is set to follow the alarm, it
will turn on when the temperature drops below the low alarm setpoint. Press
the
Enter
key to store the relay setting.
The next setting is the relay 2 setup indicated by the ”
R2
” on the left of the
display. Use the
s
or
t
key to select the function of relay 2 from manually
off (
r2 off
), manually on (
r2 on
), or following the high alarm (
r2 ALA
).
If the relay is set to follow the alarm, it will turn on when the temperature
goes above the high alarm setpoint. Press the
Enter
key to store the relay
setting. The display will return to normal operation.
