Input and Output Wiring
6.4 Wiring Relays
6.4.1 Installation
Introduction
Every 9782 model includes two relay outputs that can be used with special features such as AutoClean and output range status indication, or to perform On/Off, Pulse Frequency Type or Duration Adjusting Type control, or for alarm annunication. In additon to these two standard relays, two more are available as an option.
The Analyzer/Controller can be programmed for these relays to
If set to
If
The relay contact maximum ratings are in Table
Table
Current, Standard:
Current, Optional:
Voltage, Standard:
Switching Power, Standard:
0.6amps at 120/240 Vdc, 0.6 amps at 110 Vdc, 2 amps at 30 Vdc
3A, 120 Vac or 28 Vdc
120/240 Vac
ac - 125 VA resistive dc - 60 watts resistive
CAUTION
Alarm circuits are not internally fused in the Analyzer/Controller. Provision for fuses in external circuits is recommended.
Procedure
Follow the procedure in Table
If the RC arc suppression circuits in the Analyzer/Controller interfere with other devices at your site, refer to 6.4.2 for instructions for disconnecting the suppression circuits.
If a relay is being used to indicate automatic output range change, see 6.4.3 for guidance in wiring a device to the relay.
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