Table of Contents
Advertisement
To ensure reliable performance,
do not simultaneously
close
more relays than the mainframe power supply can handle. The
closure limit depends on factors such as the drive current of
each relay, temperature,
and ventilation.
Table 2-I 5 lists the maximum current available from the main-
frame power supply for energizing relays under different operat-
ing conditions.
To find the maximum number of simultaneous
relay closures, divide the current listed by the specified drive
current per relay. Remember that some cards energize two re-
lays for each channel (e.g., Models 7063 and 7067).
Table 2-15.
Maximum
Relay Drive Current
from
Mainframe
Rack-
Rack-
mount
mount
Bench-top
(1" space
(No space
(Louvers
between
between
Temp.
unobstructed)
scanners)
scanners)
23' C
4.3A
4.3A
4.3A
50" c
3.3A
2.3A
1.3A
OPEN - Upon actuation of the open function the presently dis-
played channel opens. If the presently displayed channel is al-
ready open, pressing the OPEN button has no effect on the
channel. When the presently displayed channel is closed and
the OPEN button is pressed the open and close digit (furthest
digit on the right of the display) changes to an o and that channel
is opened. Refer to the following display.
Open and Close Digit
o=
c=
Channel
Open
Channel
Closed
NOTE
Close and open for each channel remains valid
even when not viewing the channel or the display.
FIRST - Upon actuation of the FIRST button the presently dis-
played channel is designated
as the first channel of a multi-
channel configuration.
If the presently displayed channel has al-
ready been specified as the first channel, pressing the FIRST
button has no effect on the channel or the display. If the pres-
ently displayed
channel has not been designated
as the first
channel, the display format is as follows:
Pressing the-FIRST
button designates
the
channel and the display format is as follows:
channel as first
where:
01 = Present Channel
F = First Channel
o =' Channel
Open
There are a number of ways to change the designated
first
channel they are listed as follows:
A. Select the desired new channel then press FIRST.
B. Activate Program 99.
C. Activate Program 90.
NOTE
Powering the unit down will not change the desig-
nated first channel.
LAST -
Upon actuation of the LAST button the presently dis-
played channel is designated
as the last channel of the multi-
channel configuration.
if the presently displayed channel has al-
ready been specified as the last channel, pressing the LAST
button has no effect on the channel or the display. If the pres-
ently displayed
channel has not been designated
as the last
channel, the display is as follows:
where:
01 ,= Present Channel
o = Channel
Open
--I cl
Pressing the LAST button designates the channel as last chan-
nel and the display format is as follows:
I
/
10
L, 01
where:
10 = Present Channel
L = Last Channel
o = Channel
Open
There are two ways of changing the designated
last channel
they are listed as follows:
where:
01 = Present Channel
o = Channel
Open
+
2-15
Advertisement
Table of Contents
