Liquid Controls SP2800 - Manual (Page 38)

34
5-4 Optional RS232 / RS422 Serial Communi-
cations
This option allows the Batcher to act as a slave
to a master terminal. It may be accessed for
counts, rate, presets and K Factors. Up to 15
units can be linked together in parallel and
addressed separately to transmit unit status or
accept new set points using the standard ASCII
format. Baud rates of 300, 600, 1200, 2400,
4800 or 9600 as well as choice of odd, even,
space, or mark parity can be selected by keypad
control. Further information and more details
are provided in Section 8 at the end of this
manual.
5-3 Optional Analog Output (continued) SECTION 6 TROUBLE SHOOTING AND
MAINTENANCE GUIDE
6-1 Warning Messages
6-1.1 PREWRONG
Indicates that the values in Preset and Prewarn
are not acceptable. This condition will occur
when the Preset value is less than the Prewarn
value. The display will continue to display this
message until the error is corrected. To change
the Preset and Prewarn values see Section 3-3,
Setup Procedure.
6-1.2 DATALOST
Warning message that indicates the unit is re-
ceiving pulses faster than 20000 pulses per
second or the data buffer is full. In either case
the display will not show the proper count or rate
and the frequency output will be inaccurate.
There are three possible remedies:
a) Check to see that your input is not ex-
ceeding the Batcher ratings of 20 KHz
Max. Input speed.
b) Change your OUT FREQ settings to
handle a higher count speed (Section 3-
3, Menu Item 7).
c) Change your count K Factor to a larger
number, since the output frequency is
based on the factored count (Section 3-
3, Menu Item 3).
6-1.3 RFFFFFFF
Indicates that the factored input rate has ex-
ceeded a 7 digit number. The ratemeter cannot
handle numbers larger than 7 digits (i.e.
9999999). Change the Rate K Factor to a larger
number (Section 3-3, Menu Item 3) to correct
this problem.
6-1.4 LOCK ON
Indicates that the unit has been locked out! The
unit must be unlocked before any changes can
be made. See Section 3-3, Menu Item 4 to
unlock the unit.
Figure 5-2.1
3
• Analog
Output
4
• Input
A
12
• Ground (-DC)
13
• (+) 12 V
o
lts Out
14
• (+) DC Power In
15
• Isolated 12 V (-)
16
• Isolated 12 V (+)
17
• AC
In
18
• AC
In
110/220 VAC
Strip Chart
Recorder
+
–
4-20mA Source
4-20mA Return
Fuse
3
• Analog
Output
4
• Input
A
12
• Ground (-DC)
13
• (+) 12 V
olts Out
14
• (+) DC Power In
15
• Isolated 12 V (-)
16
• Isolated 12 V (+)
17
• AC
In
18
• AC
In
110/220 VAC
Strip Chart
Recorder
–
+ Voltage Out Source
Voltage Out
Return
Fuse
4-20 mA Out Wiring
Voltage Out Wiring