INSTALLATION INSTRUCTIONS
8
selecting the appropriate Function Code (see Fig-
ure 22).
In the Sequential mode, each output turns on as
specified in Figure 3, only if that output is next in
sequence (see Figure 4). The counter automati-
cally resets and advances the sequence after the
first and second events shown in Figure 4. In the
Reset mode the counter is automatically reset to
zero, in the Preset mode the counter is automati-
cally reset to Preset 2 after the first event and Pre-
set 1 after the second event shown in Figure 4.
The counter does not automatically reset after the
third event unless automatic recycle is pro-
grammed to occur at that output. An automatic
recycle at any event resets both the counter and
the sequence. In the count mode, the Preset
LED’s light to show which Output is next in
sequence.
In the Sequential mode, the reset input or reset
key may be used at any time to reset both the
counter and the sequence. A separate program-
mable input (terminal 16) may be used at any time
to reset the counter without resetting the
sequence.
Turning Outputs Off
Once a transistor output is turned on, it remains on
until it is unlatched. There are five ways to unlatch
each output:
1. Timeout
Each output has a separate timeout function.
The timeout function causes an output to
unlatch after a specified “on” time. The allow-
able time range is from 0.01 to 99.99 seconds.
A value of 0 inhibits the timeout function for
that output. In this case, the output remains on
until unlatched by one of the following meth-
ods.
2. Unlatch at Reset (UAR)
Each output may be programmed to unlatch
when the reset key is pushed or the reset input
is energized (goes low).
3. Latch Until Reset Complete (LURC)
Each output may be programmed to unlatch
when the reset key is released or the reset
input is de-energized (goes high).
4. Unlatch at Alternate Output
Each output may be programmed to unlatch
when one or either of the remaining two out-
puts turns on.
5. Unlatch Inputs
Two programmable unlatch inputs may be
used to unlatch any two of the three outputs.
When an unlatch input is energized, the
selected output unlatches.
Figure 4. Output Sequence Table
Reverse Outputs
Each transistor output may be programmed to
operate in reverse. A reversed output is normally
on (conducts to DC Common) and turns off when
Figure 3 shows that it should turn on. Likewise, a
reversed output turns on when it is timed out or
unlatched.
When power is interrupted, all outputs turn off and
will remain off when power is reapplied. It is there-
fore necessary to “enable” all reversed outputs
after a power interruption. This is usually done by
energizing the appropriate unlatch input(s) or by
programming the reversed outputs to latch until
reset complete and then resetting the control.
,
,
,
,
WARNING
A POWER OUTAGE CAUSES THE OUT-
PUTS AND RELAYS TO TURN OFF
REGARDLESS OF THE OPERATING
MODE SELECTED. BE SURE THAT
THIS EFFECT IS NOT HAZARDOUS TO
THE OPERATOR.
Event
Sequential Mode
Reset
Preset
First
Second
Third
Output 1
Output 2
Output 3
Output 3
Output 2
Output 1
