Honeywell DR4300 manual Switch Settings, Safety precautions

Configuration, Startup, and Operation of Recorder with Display

4.3.5 Switch Settings

4.3.5.1 Introduction

Significance of hardware switches in models with display

SW6 input switches: The display and keypad are used to configure the software on each pen channel’s printed circuit assembly (PCA). In addition, the input hardware switches 1, 3, 4, 5 and 6 in SW6 must be set to match the input type as described in Subsection 4.3.5.2. This is required so that the recorder hardware will provide an appropriate value to the recorder software.

SW6 burnout switch 2: This burnout switch should be set to specify whether the input used by the recorder for the channel should be sent over range or under range if the input to the recorder fails while the “BRNOUT” parameter value is “NONE”. Alternatively, if the “BRNOUT” parameter has a value of “UP” or “DOWN” switch 2 should be set to match. Details are provided in Subsection 4.3.5.3.

SW1 configuration switches: In a recorder model having a display and keypad all switches in SW1 will be ignored if the cable from the display and keypad assembly is plugged into J4 on the PCA associated with the pen channel. (SW1 switches are used to configure recorder models that do not have a display and keypad as described in Section 3.)

ATTENTION

If the display cable is disconnected after the software has been configured using the display and keypad, the recorder’s behavior will depend on the settings of the SW1 switches. If all SW1 switches are in the OFF position when the cable is disconnected, the recorder will continue to use the software configuration entered with the display and keypad. However, if all SW1 switches are not OFF when the cable is disconnected, the recorder will use the configuration in Table 3-2 that matches the SW1 switch settings. (If the switch setting combination does not match any configuration in Table 3-2, the recorder will use configuration #1.)

Safety precautions

Exercise appropriate safety precautions when setting switches.

WARNING—SHOCK HAZARD !

SET THE SWITCHES DESCRIBED IN THIS SECTION WITH THE UNIT POWER DISCONNECTED. DO NOT TOUCH POWER CONNECTIONS AT TB1. FAILURE TO OBSERVE THIS PRECAUTION CAN RESULT IN EXPOSURE TO A POTENTIALLY LETHAL SHOCK HAZARD. MORE THAN ONE SWITCH MAY BE REQUIRED TO DE-ENERGIZE UNIT.

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