Liquid Controls SP2800 - Manual (Page 36)

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SECTION 5 OUTPUTS
The Batcher has five different possible types of
outputs for controlling external devices or moni-
toring the rate and totals. They are: Frequency
Output, Relay Outputs, Open Collector Outputs,
and Optionally available Analog Output (not
available on models with (Square Law input),
and RS232, RS422, or RS422M Serial Commu-
nications.
5-1 Frequency Output (Terminal 2)
5-1.1 Electrical Characteristics of Frequency
Output
The Batcher generates a pulse out for each
factored count. A sinking NPN transistor output
(see Figure 5-0.1), can drive external devices at
various rates selected through the keypad
menu see Table 5-0.2 below). The Open Col-
lector sinks 30 VDC maximum to 1 volt maxi-
mum with a maximum current of 100 mA.
Speed (Hz) 10 200 2000 20000
Min. on/off (msec) 47.5 2.0 0.2 0.013
Table 5-0.2
Applications: Remote totalizers, ratemeters or
other monitoring devices.
10 Hz: Electromechanical totalizers
Programmable Controller inputs
200 Hz: Electronic totalizers
Programmable controllers with high
speed input cards.
2000 Hz: High speed totalizers.
20000 Hz: High speed totalizers.
4-3 DC Power Inputs (Terminals 12, 14)
The Batcher may be powered by an external DC
power supply. The supply must provide 12 - 27
Volts DC and at least 280 mA of current. The
positive side (+DC) of the DC supply should be
hooked to Terminal 14 and the negative (or
Ground) side to Terminal 12.
NOTE: Units powered by DC Voltages do not
have an isolated voltage out on Terminals 15
and 16 or +12 VDC on Terminal 13.
4-4 AC Power Inputs (Terminals 17, 18)
The Batcher may be ordered for 110 or 220 VAC
power. The unit requires single phase 50/60 Hz
AC power.
The voltage range is
±
15% of the rated voltage.
Voltages below this range will not power the
unit. Voltages above this range may damage
the unit. The Batcher is relatively immune from
electrical noise on the AC lines. However, in
extremely noisy applications some line condi-
tioning or filtering may be necessary. If fusing is
required, external fusing must be supplied.
Note: The Batcher has no internal fuse to blow
out. If the unit does not function when power is
applied, contact the factory for assistance or to
arrange for repair.
Caution: An external fuse is required:
DC Power: 0.5 Amp
AC Power: 0.125 Amp
!