VERDER CARBOLITE GERO HTF 18/15, Installation, Operation And Maintenance Instructions

Page: 3 / 62

3.8.8 To stop and reset a program 20
3.8.9 To run a different program (P10 and P25) 20
3.8.10 Program Status 20
3.8.11 Program Hold with Holdback 21
3.8.12 Power Failure Recovery 21
3.8.13 Alarms 21
3.8.14 Program Example 1 22
3.8.15 Program Example 2 24
3.9 Controller Options 26
3.9.1 Digital Communications - RS232 27
3.9.2 Digital Communications - RS485 27
3.9.3 Comms Address 27
3.9.4 Alarm Option 27
3.9.5 Remote Input and Output (Analogue Communications) 28
3.9.6 Program segment output 28
3.10 Temperature Controller Replacement 29
3.11 Controller Navigation Diagrams 29
3.11.1 Operator Level 1 - No Program Running 30
3.11.2 Operator Level 1 - Program Running 31
3.11.3 Supervisor Level 2 32
4.0 3508 Dual Loop Cascade Control (if fitted) 33
4.1 Principle of Cascade Control 33
4.2 Operation of Cascade Control 33
4.3 Bypassing Cascade Control 37
4.4 3508P1 Element Loop (Loop 2) 37
4.5 Caution 37
4.6 Over-Temperature Control 37
5.0 2132 Over-Temperature Controller Description (if fitted) 38
5.1 Description 38
5.2 Operation 38
5.2.1 Controls 38
5.2.2 Operation 39
5.2.3 Over-Temperature Operation 39
5.2.4 Over-Temperature Alarm 39
5.2.5 Resetting the Over-Temperature Alarm 39
5.2.6 Sensor Break 39
5.3 Audible Alarm 40
5.4 Navigation Diagram 40
3