Emerson PN 51-FCL-1056 instruction manual Using Hold

MODEL FCL-1056	SECTION 4.0
	DISPLAY AND OPERATION

4.5 USING HOLD

4.5.1 Purpose

To prevent unwanted alarms and improper operation of control systems or dosing pumps, place the alarms and outputs assigned to the sensor in hold before removing it for maintenance. Hold is also useful if calibration, for example, buffering a pH sensor, will cause an out of limits condition. During hold, outputs assigned to the sensor remain at the last value, and alarms assigned to the sensor remain in their present state.

Once in hold, the sensor remains in hold until hold is turned off. However, if power is lost then restored, hold will automatically be turned off.

4.5.2 Using the Hold Function.

1.Press MENU. The main menu screen appears. Move the cursor to

Program.

Menu

Calibrate

Hold

Program

Display

2. Choose HOLD.

	Hold
S1Holdld	No
S2 Hold	No

3.The screen shows the current hold status for each sensor. Select the sensor to be put in hold. Press ENTER.

S1 Hold outputs

and alarms?

NoNo

Yes

4.To put the sensor in hold, choose Yes. To take the sensor out of hold, choose No.

Once in hold, the sensor remains in hold until hold is turned off. However, if power is lost then restored, hold will automatically be turned off.

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