Troubleshooting Guide; Hardware; Wireless Communication - United Electric Controls VANGUARD Installation And Operation Instruction Manual

5.0 TROUBLESHOOTING GUIDE

The Vanguard WirelessHART gas detector is used as part of a wireless mesh network that may communicate with
other manufacturers' WirelessHART devices, Gateways, and control systems. The following provides troubleshooting
suggestions for common operating problems that may be encountered.

5.1 Hardware

SYMPTOM
Sensor is not recognized by
the device
Device does not operate (i.e.,
device does not refresh even
if button was pushed)
Device unable to move
beyond the idle or search
mode
Device is not responding to
the calibration gas
LCD does not refresh
LCD has slow refresh rate

5.2 Wireless Communication

Upon inputting the Network ID and Join Key, the device
initializes connection with the network in the following
phases. The phase status will be indicated on the device
display.
1. IDLE: The device is accepting configuration commands.
Once it receives a join command, it proceeds to the
Searching mode.
2. SEARCHING: The device keeps its receiver activated
while searching for available networks.
3. NEGOTIATING: The device has detected the desired
network and has received a join request from the
network manager.
4. CONNECTED: The device has established connection
with the network manager and has successfully joined
the network. Data transfer is not possible yet.
5. OPERATIONAL: The device has sufficient bandwidth
for communication with the network manager. Data
transfer can now occur.
POSSIBLE CAUSES
Poor connection between sensor
and device
Incorrect placement of sensor
Battery not connected properly
Battery is dead
Incorrect Network ID and Join Key Check the Network ID and Join Key and attempt rejoining network.
Network is not self advertising
Incorrect gas or gas concentration Check gas type and concentration.
Incorrect calibration
Poor gas delivery
Poor connection between sensor
and device
Extreme ambient temperature
Battery is dead
Battery not connected properly
Extreme ambient temperature
RECOMMENDED ACTION
Check the integrity of the 8-pin connector in the sensor. Pins must not be
bent.
Ensure that the sensor is completely snapped in place.
Check the battery is seated properly in the battery compartment.
Check the integrity of the 5-pin connector at the battery port. Pins must not
be bent.
Replace battery.
Check that the network is in the active network advertise mode.
Power cycle device and try again.
Review the Calibration procedure listed within on page 12.
Check gas delivery equipment components.
Check the integrity of the 8-pin connector in the sensor.
Ensure that the sensor is completely snapped into place.
Replace the sensor.
Transfer device within temperature range -40°C (-40°F) to 65°C (149°F).
Replace battery.
Check the battery is seated properly in the battery compartment.
Check the integrity of the 5-pin connector at the battery port.
A slow refresh rate is normal at low temperature. This is intentional to
enhance the viewing of the LCD.
NOTE: If a handheld communicator is unavailable, use the
following WirelessHART Commands to initialize the join
process:
• 768 - Write Join Key
• 773 - Write Network ID
• 774 - Read Network ID
16
Table 11
IM_TCD60 02