YZ Systems NJEX ZEO 6400, Инструкция и руководство по эксплуатации

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SECTION 5: SYSTEM CONTROL ELECTRONICS
YZ Systems Milton Roy • 201 Ivyland Road • Ivyland, PA • USA • 18974 • P: 281.362.6500 • www.yzsystems.com
NJEX ZEO Version 04/13/2021 Page 49
4 - Configuring Alarm Parameters
The N-400 has an array of alarm parameters that can be configured to send an alarm
signal and illuminate the alarm LED per set conditions. Each alarm can be enabled or
disabled with the option to output the alarm to external means of monitoring.
4 .1 - Configurable Alarm Signal Options
•
Injection Rate
– The controller measures the odorant injected by monitoring the
verometer levels and converts this to an injection rate over time. An alarm can signal if
the calculated injection rates is deviating from the target input parameters by a
percentage.
•
Odorant Tank Level
– The alarm can be enabled to signal when the odorant tank level is
below or above a certain level. The low and high levels can be set in the alarm parameters.
If an odorant tank level alarm is enabled, a secondary
Odorant Tank Cable alarm will
indicate if the communication with the bulk tank level is lost.
•
Odorant Inlet Pressure
– The alarm can be enabled to signal when the odorant inlet
pressure is outside an acceptable range. The NJEX ZEO requires 10
– 25 psi (.68-1.73
Bar) blanket pressure. The default values Odorant Inlet Pressure Low and High values
are 10 psi (.68 Bar) and 30 psi (2.0 Bar). If an odorant inlet pressure alarm is active, a
secondary
Odorant Pressure Cable alarm will indicate if communication with the inlet
pressure transducer is lost.
•
Alarm Out Delay
– A time delay can be set on the alarm out to prevent premature
signaling if there is a brief variation in the tank level, inlet pressure, etc.
4.2 - Non-Configurable Alarm Signals
•
Flow Signal
– When enabled, it will alarm
if the flow signal meets any of the following
conditions:
- Gas flow rate measured above the
maximum flow rate
- Loss of flow signal
- No flow condition is reached
•
Verometer
– Alarm can be enabled to
signal for changes in the verometer
measurements. When enabled, it will
alarm if the verometer meets any of the
following conditions:
- Verometer is overfilled
- Leak detected within the verometer
- Leak detected within the transfer
pump
- Slow or no fill
- Loss of signal
- Loss of temperature sensor cable
•
Injection Pump
– When enabled it will alarm out if the pressure switch senses a
diaphragm failure or loss of signal to the ACC.
4.3 - To set the Alarm Parameters
4.3.1. Press the Select Key from the Home Screen to open the Main Menu
Figure 33 Configuring Alarm Parameters