Liquid Controls SP3000 User Manual

Page 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:

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