USER MANUAL – Z-GPRS2 / Z-LOGGER
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24.
HOUR COUNTER ALARM
Z-GPRS2 / Z-Logger let you control NR4 independent hour counters. This function generates an alarm if the
number of hours set in which the digital input is in a certain logic status is exceeded. The typical application
is an automatic pump, boiler, utility, oven, etc. maintenance alert.
The resolution for the 4 hour meters is 1 second.
Inputs can be set independently so that the hour meter counts on open or closed status. We recommend
enabling the counter on closed status to correctly count in the blackout condition.
The count is saved in the non volatile memory before the device is turned off.
The maximum number of countable hours is about 127 years.
CAUTION!
The hour meter alarm cannot be simultaneously activated with the digital input alarm on the
same input.
25.
ALARM ON SOLAR PANEL MALFUNCTION
Z-GPRS2 / Z-Logger allows NR 2 strings of photovoltaic panels to be controlled by reading the two analog
values from the 2 TA connected to the inputs. When the difference between the two string streams
exceeds the K value, a malfunction event is generated. This indicates problems due to a string using the
second as a comparison. The alarm can be activated regardless of the day/night.
26.
AUXILIARY DIGITAL/ANALOG ALARMS ON MODBUS
RTU / MODBUS TCP-IP PERIPHERALS
Z-GPRS2 / Z-Logger support up to 30 auxiliary alarms connected to RS485 serial ports via Modbus RTU
protocol or via the Ethernet port via Modbus TCP-IP protocol.
Embedded IO can be extended in the setup software with any Seneca Modbus module (both Modbus TCP-
IP and Modbus RTU) or with a third party module that supports Modbus TCP-IP server or Modbus RTU slave
protocols.
NOTE
Up to 30 digital or analog alarms can be connected, for example, 3 Seneca Z-10-D-IN modules
can be connected to create 30 additional digital inputs or 2 Seneca Z-10-D-IN modules and 1 Z-
8AI module to create 20 digital inputs and 8 analog inputs.
Summary of Contents for Z-GPRS2
Page 8: ...MANUALE UTENTE Z GPRS2 Z LOGGER 8...
Page 72: ...MANUALE UTENTE Z GPRS2 Z LOGGER 72...
Page 165: ...USER MANUAL Z GPRS2 Z LOGGER 73...
