48Vfl Front Panel; Keypad Descriptions - Extech Instruments 96VFL Series User Manual

5.2 48VFL Front Panel

FIGURE 5.2: 48VFL FRONT PANEL
1. Process Variable (PV) display digits (red) show the process input.
2. Setting Variable (SV) display digits (green) show the programmed setpoint.
3. Alarm 1 (A1) and Alarm 2 (A2) relay status indicators.
4. Programming keypad: Set, Shift (<), Down arrow, Up arrow (left to right). See dedicated
section below.
5. Control Output 1 (C1) and Control Output 2 (C2) status indicators.
6. MANUAL control mode status (rightmost decimal flashes on SV display).
7. AUTO TUNING mode status (rightmost decimal flashes on PV display).
8. Ventilation holes (do not obstruct airflow)
9. Rear screw terminal block.

5.3 Keypad Descriptions

SET Key
•
Used to access and scroll through Menu 1 (User level) parameters. Used to scroll
through menus 2, 3, 4, and 5 also, once they are accessed (see combination keystrokes
paragraph below, and the Programming menu sections, for complete details).
•
Long press (5 seconds) to reset an Alarm Timer.
SHIFT Key (<)
•
Long press (5 seconds) to start the Auto Tuning utility.
•
Long press (5 seconds) to abort an Auto Tune session.
Up/Down Arrow Keys
•
The up/down arrows are used to adjust the Setting Value (SV) value: Use the SHIFT (<)
button to first select a digit and then use the up/down arrows to change it. Press SET to
confirm when done and to continue scrolling. This is basically the same procedure for
changing settings in the menu system.
VFL Series User Manual v2.0 10/20
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