Manual

9
1.63 RELAY OUTPUTS
One relay is provided as a flow alarm and a second is provided for the other alarm conditions.
Each has the following specifications:
Type: Dry contact, Form C
Contact Rating: 10A at 115/230 VAC/28 VDC
Typical Relay Output Schematics:
22
23
24
1.64 AUXILIARY POWER OUTPUT
Voltage: 24 VDC regulated and filtered
Isolation: 230 VAC max
Current: 0 to 100 mA
Protection: Short Circuit Proof
1.7 RS-232 COMMUNICATIONS PORT
(Refer to RS-232 Addendum supplied with RS-232 option)
Connector: 25 Pin Sub-D
Input Impedance: 3000 ohms to 7000 ohms
Compliance Voltage:
Output: -25 to –5 (Mark); 5 to 25 (Space); Volts
Input: -25 to –3 (Mark); 3 to 25 (Space); Volts
Protection: Short Circuit Proof
Protocol: 8 bits, 1 stop bit
Parity: None (Not Monitored)
Available Baud Rates: 300, 1200, 9600
RS-232 Connector Pin Out:
Printer Busy (11)
Pins 4 and 5 are jumpered together
Pins 6, 8, and 20 are jumpered together
Ground (7)
Recieve (2)
Transmit (3)
25
24 23
22 21
20
19
18 17
16 15
14
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