Watlow Series V4 - Manual (Page 12)

Corrective Action
• Check switches, fuses, breakers, interlocks, limits, connectors,
etc. for energized condition and proper connection.
• Measure power upstream for required level. Check part number for input power required.
• Check wire size.
• Check for bad connections.
• Configure output as an alarm.
Check alarm set points..
• To clear the alarm, correct the alarm condition; check to see if the alarm is latched.
• Check the alarm sides setting.
• Check the alarm type setting.
• Check the alarm logic for compatibility with system peripherals and annunciators.
• Check the power limit setting.
• Check the operation mode.
• Check the alarm output function.
• Check the °C or°F setting.
• Check the calibration offset value; set it to a lower level.
)
• Sensor input generated a value lower than allowable signal range, or A/D circuitry malfunctioned. Enter a valid
input. Make sure [``In] parameter (Setup Menu) matches your sensor and DIP switches are set accordingly.
• Microprocessor is faulty; consult factory.
• Unless power interruption occurred while controller was storing data, nonvolatile memory is bad; consult factory.
• A/D circuit is underrange. Check sensor; if functioning properly, consult factory. Make sure [``In] parameter
(Setup Menu) matches your sensor and DIP switches are set accordingly.
• A/D circuit is overrange. Check sensor; if functioning properly, consult factory. Make sure [``In] parameter
(Setup Menu) matches your sensor and DIP switches are set accordingly.
Output 2 Wiring
Figure 12a – Switched DC, Open Collector
V4T _ - _ C _ _ - _ _ _ _
13
unregulated
V+
V—
15
Internal Circuitry
4
5
6
18
17
16
15
14
13
8
7
18
17
16
15
14
13
External
Load
-
+
1 2 OFF 1 2