Watlow PM PLUS 6 User Manual

Watlow PM PLUS™ 6 • 115 • Chapter 10 Appendix
Indication Issue Issue / Possible Cause(s) Corrective Action
Heater Error
Heater Error
• Current through load is above cur-
rent trip set point
• Current through load is below cur-
rent trip set point
• Check that the load current is
proper. Correct cause of over cur-
rent and/or ensure current trip set
point is correct.
• Check that the load current is
proper. Correct cause of undercur-
rent and/or ensure current trip set
point is correct.
Current Error Load current incorrect.
• Shorted solid-state or mechanical
relay
• Open solid-state or mechanical
relay
• Current transformer load wire as-
sociated to wrong output
• Defective current transformer or
controller
• Noisy electrical lines
• Replace relay
• Replace relay
• Route load wire through current
transformer from correct output,
and go to the
C.si
Source Output
Instance parameter (Setup Page,
Current Menu) to select the output
that is driving the load.
• Replace or repair sensor or con-
troller
• Route wires appropriately, check
for loose connections, add line
filters
Menus inacces-
sible
Unable to access Setup,
Operations, Factory, or
Profile Lists
• Security set to incorrect level
• Digital input set to lockout keypad
• Custom parameters incorrect
• Check
Operations - Factory - Lock
settings and enter appropriate
password in
Factory - Unlock.
• Change state of digital input
Function key does
not work
Function key does not ac-
tivate required function
• EZ-Key function incorrect
• EZ-Key function instance not
correct
• Keypad malfunction
• Verify EZ-Key function in the Setup
Menu
• Correct and change the function
instance if not correct
• Replace or repair controller
Displayed value
too low
Value to low to be dis-
played in 4 digit LED dis-
play <-1999
• Incorrect setup • Check scaling of source data
Displayed value
too high
Value to high to be dis-
played in 4 digit LED dis-
play >9999
• Incorrect setup • Check scaling of source data
Detection of and Rules Around Abnormal Sensor Conditions
Inputs Detection of Abnormal Conditions
Thermocouple
Shorted No direct detection, Open loop firmware detection.
Open Yes, Parasitic pull-up
Reversed Yes, firmware detection
Current Source
Shorted Range limiting only
Open Range limiting only
Reversed Range limiting only
Voltage Source
Open Range limiting only
Shorted Range limiting only

Watlow PM PLUS 6 Specifications

General

Brand	Watlow
Model	PM PLUS 6
Category	Controller
Language	English