Extech Instruments 48VFL User Manual

VFL Series User Manual v2.0 10/20
2
Contents
1. Introduction ................................................................................................... 4
2. Safety ............................................................................................................ 5
3. Panel Cut-out, Dimensions, and Mounting ...................................................... 6
3.1 48VFL Mounting ................................................................................................................. 6
3.2 96VFL Mounting ................................................................................................................. 6
4. Wiring ............................................................................................................ 7
4.1 IMPORTANT SAFETY WIRING CONSIDERATIONS .................................................................... 7
4.2 AC Power Wiring ................................................................................................................ 7
4.3 Thermocouple Input ........................................................................................................... 7
4.4 Analog Input (4-20mA) optional ........................................................................................... 7
4.5 RTD Input (2, 3, or 4 wire) ................................................................................................... 8
4.6 Control Relay Wiring ........................................................................................................... 8
4.7 Pulsed DC Trigger Output Wiring .......................................................................................... 8
4.8 Analog Output Wiring ......................................................................................................... 9
4.9 Alarm Relay Output ............................................................................................................ 9
5. Product Description ...................................................................................... 10
5.1 96VFL Front Panel ............................................................................................................. 10
5.2 48VFL Front Panel ............................................................................................................. 11
5.3 Keypad Descriptions ......................................................................................................... 11
5.4 Display Descriptions .......................................................................................................... 12
6. Process Control ............................................................................................ 14
6.1 Connect the Inputs ........................................................................................................... 14
6.2 Connect the Outputs ......................................................................................................... 14
6.3 Program the Controller ..................................................................................................... 14
6.4 Primary Relay Output Control ............................................................................................ 14
6.5 Secondary (optional) Relay Output Control ......................................................................... 14
6.6 Pulsed DC Trigger Option .................................................................................................. 14
6.7 Analog Output Option ....................................................................................................... 15
6.8 ON-OFF Control ................................................................................................................ 15
6.9 PID Control ...................................................................................................................... 15
6.10 PID ‘Time Proportioning’ Control ....................................................................................... 16
6.11 Proportional Control Considerations .................................................................................. 17
6.12 Dead-Band Considerations ................................................................................................ 19
7. Programming Menu Basics ........................................................................... 20
8. Programming Menu 1 (User level) ................................................................ 22
9. Programming Menu 2 (Soft Start level) ......................................................... 23
9.1 Soft-Start Utility Overview ................................................................................................. 23
9.2 Ramp-to-Setpoint (RAMP) Overview .................................................................................. 23
10. Programming Menu 3 (PID) .......................................................................... 24
11. Programming Menu 4 (Option) ..................................................................... 26

Extech Instruments 48VFL Specifications

General

Brand	Extech Instruments
Model	48VFL
Category	Controller
Language	English