Teledyne 4060 manual Remote Calibration Connections

Installation Series 4060

3.3.2.6DIGITAL REMOTE CAL INPUTS

The digital remote calibration input accepts 0 V (off) or 24 VDC (on) for remote control of calibration. (See Remote Calibration Protocol below.) See Table 3-5 for pin connections.

Span: Floating input. A 5–24 V input across the + and – pins puts the analyzer into the Span mode. Either side may be grounded at the source of the signal. A 0–1 volt across the terminals allows Span mode to terminate when done. A synchronous signal must open and close external span valve appropriately.

Cal Contact: This relay contact is closed while analyzer is spanning. (See Remote Calibration Protocol below.)

Table 3-5: Remote Calibration Connections

Pin Function

10+ Remote Span

12– Remote Span

40Cal Contact

41Cal Contact

Remote Calibration Protocol: To properly time the Digital Remote Cal Inputs to the Model 4060 Analyzer, the customer's controller must monitor the Cal Relay Contact.

When the contact is OPEN, the analyzer is analyzing, the Remote Cal Inputs are being polled, and a span command can be sent.

When the contact is CLOSED, the analyzer is already calibrating. It will ignore your request to calibrate, and it will not remember that request.

Once a span command is sent, and acknowledged (contact closes), release it. If the command is continued until after the span is complete, the calibration will repeat and the Cal Relay Contact (CRC) will close again.

For example:

1.Test the CRC. When the CRC is open, send a span command until the CRC closes (The CRC will quickly close.)

34 Teledyne Analytical Instruments