9.5.3
Calibrating and checking probes
............................................................................................................ 51
9.5.4 Cleaning and servicing probes ................................................................................................................ 51
9.5.5 Calibration Notes ...................................................................................................................................... 52
9.6 GENERAL SENSOR CALIBRATION ..................................................................................................................... 53
9.7 CALIBRATING AN AMPEROMETRIC SENSOR ....................................................................................................... 54
9.8 ANALOG SENSOR ALARMS ............................................................................................................................... 55
9.8.1 Analog Alarm Configuration ..................................................................................................................... 55
9.9 ANALOG SENSOR DIAGNOSTICS ....................................................................................................................... 56
9.9.1 pH-ORP Driver card Diagnostics ............................................................................................................. 57
9.9.2 CT (Conductivity, Boiler Cond., Condensate and Temperature) Driver card Diagnostics ....................... 57
9.9.3 The 4-20mA Input Driver Card Diagnostics ............................................................................................. 57
9.9.4 The 4-20mA output Driver Card Diagnostics ........................................................................................... 57
9.9.5 Serial Sensors (CTFs, LPR, DP) Driver Card Diagnostics ...................................................................... 57
9.10 CONFIGURING DIGITAL INPUTS .................................................................................................................... 59
9.10.1 Configure a Digital Input as a Water Meter: ............................................................................................. 59
9.10.2 Link a Water Meter to a Relay (Applies to all relays ) .............................................................................. 60
9.11 DISABLE AN ANALOG OR DIGITAL INPUT ....................................................................................................... 61
9.11.1 Changing or Unlinking an Analog Input Tied to an Output Relay ............................................................ 62
9.11.2 Changing or Unlinking Analog Inputs Tied to a 4-20mA Output: ............................................................. 63
9.11.3 Changing or Unlinking a Digital Input Tied to a Digital Output ................................................................. 63
9.11.4 Changing or Unlinking a Digital Input Tied to a 4-20mA Output .............................................................. 64
9.12 PHANTOM INPUTS ....................................................................................................................................... 64
10 PROGRAMMING THE CONTROL OUTPUTS (RELAY AND 4-20MA) ......................................................... 64
10.1 FREQUENCY/PULSE OUTPUTS: .................................................................................................................... 65
10.2 DETERMINE IF A RELAY IS ENABLED: ............................................................................................................ 65
10.3 ENABLE AND CONFIGURE A RELAY .............................................................................................................. 65
10.4 NAMING THE OUTPUT ................................................................................................................................. 66
10.5 CONFIGURING A BLOWDOWN RELAY ............................................................................................................ 67
10.6 CONFIGURING A FEED RELAY ...................................................................................................................... 67
10.6.1 Feed Based on a Water Meter ................................................................................................................. 68
10.6.2 Feed Based on a Sensor ......................................................................................................................... 68
10.6.3 Feed Based on Bleed and/or Feed .......................................................................................................... 69
10.6.4 Feed Based on Percent Time & Base Feed ............................................................................................ 70
10.6.5 Feed Based on a Sensor with Event Control ........................................................................................... 70
10.6.6 Set up a relay using the Feed mode with an oxidant sensor; ORP or any 4-20mA input........................ 70
10.6.7 Choosing a Cycle ..................................................................................................................................... 70
10.7 CONFIGURING AN EVENT-OTHER RELAY ...................................................................................................... 71
10.7.1 Schedules, Prebleeding, Lockout and With a Sensor .............................................................................. 71
10.7.2 Add, Remove, Edit Events ....................................................................................................................... 72
10.8 INTERLOCKS ............................................................................................................................................... 74
10.8.1 Setting/Removing Interlocks .................................................................................................................... 74
10.9 BLOCKS ..................................................................................................................................................... 75
10.10 CONTROL ACTION (ON DECREASES/ON INCREASES SENSOR): ................................................................ 75
10.11 SPECIAL CONTROL FUNCTIONS: .............................................................................................................. 76
10.11.1 Timed Cycling: .................................................................................................................................. 77
10.11.2 Time Modulate .................................................................................................................................. 77
10.11.3 PID Control ....................................................................................................................................... 78
10.12 BOILER BLOWDOWN: .............................................................................................................................. 79
10.12.1 Continuous Boiler Blowdown ........................................................................................................... 79
10.12.2 Captured Sample Blowdown ............................................................................................................ 79
10.12.3 Varying Cycles: ................................................................................................................................ 82
10.13 HOW TO SETUP A RELAY AS AN ALARM OUTPUT: ..................................................................................... 83
10.14 PRIME (FORCE ON) A RELAY ................................................................................................................... 83
10.15 SENSOR WASH: ...................................................................................................................................... 83
10.16 4-20MA OUTPUTS: .................................................................................................................................. 84
10.16.1 How to assign 4-20mA output to control decrease (e.g Acid Feed): ............................................... 84
10.16.2 How to assign 4-20mA output to control increase (e.g Caustic Feed): ............................................ 85
10.16.3 How to assign 4-20mA output to measured value (application: feedback to PLC/DCS): ................ 85
10.16.4 How to set 4-20mA output to Manual Mode: .................................................................................... 86
10.16.5 Linking a 4-20mA Input with a 4-20mA Output ................................................................................ 86
10.16.6 Calibration of a 4-20mA Output ........................................................................................................ 87