User`s guide

Series D8 User’s Guide Chapter 6: Menu and Parameter Reference
Doc. 0600-3120-2000 Watlow Anafaze 129
Keypad Lock
Set this parameter to on to disable the . key on the keypad.
This restricts access to the operator parameters from the con-
troller keypad.
Values: on (1) or off (0). Values in parentheses are for com-
munications, and are stored as the second bit of the system
command word, so set or read only that bit.
Default: off (0)
DeviceNet Object: Global (6B hex)
Thermocouple Short Alarm
Choose a digital input to enable for thermocouple short detec-
tion. Install a device that connects the input to controller com-
mon when the process power is on. A thermocouple short is
detected if the process power is on but the temperature does
not rise as expected.
If a thermocouple short is detected, the controller puts the loop
in manual mode at the output power level specified by the
Sensor fail heat output or Sensor fail cool output parameter in
the Output menu.
Values: enabled by D/I1 to enabled by D/I8 (1 to 8) or dis-
abled (0). Values in parentheses are for communications.
Default: disabled (0)
DeviceNet Object: Global (6B hex)
AC Line Frequency
Specify the ac line frequency. The controller uses this infor-
mation for correct timing of distributed zero-crossing (DZC)
output signals and for optimum filtering of analog inputs.
If you edit this parameter, you must switch power to the con-
troller off, then back on, in order for the change take effect.
Values: 50 (1) or 60 (0) Hz. Values in parentheses are for
communications.
Default: 60 Hz (0)
DeviceNet Object: Global (6B hex)
Digital Output Alarm Polarity
Choose the polarity of all digital outputs used for alarms.
This setting does not apply to the global alarm output or the
CPU watchdog output.
Values: See Table 6.6.
Default: on (0)
DeviceNet Object: Global (6B hex)
lKeypad lock r
boff
lTC short alarmr
bdisabled
lAC line freq r
b60 Hz
lD/O alarm r
polarity bon