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MODEL 2234 DIGITAL FLOW COMPUTER ___________________________
G.
Alarm Contact Closure
1.
_______________________________________________________
NOTE:
________________________________________________________
2.
H.
Serial Output
1.
2.
3.
4.
I.
Transducer Power - Regulated +24 VDC, 300 mA. Ripple, 100 mV
maximum for 300 mA resistive load.
SECTION 1
Rating - Form B contact, 30 VDC or AC, 0.75 Amp, 10 VA
resistive, 3.5 VA inductive.
For inductive loads, the user is responsible for providing
resistive/capacitive suppression for the contact.
Function - Closes to indicate power failure, processor failure, or
other alarm condition.
Baud Rate - Selected by operator. Standard rates from 150 to
2400 baud.
Type - Ten bits in ASCII serial form.
Voltage Levels - RS232C. +12 V to -12 V
·
Logic 0 - +3 Volts minimum.
·
Logic 1 - -3 Volts minimum.
Character Frequency - Maximum 1 character per 20 msec.,
regardless of baud rate.
9
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