Password Protection (On, Off); Factory Settings Fac; External, Combined Test Or Reset Button T/R; Fault Memory - Bender ISOMETER isoES425 Manual

Function
Start-up delay
After connection to the supply voltage U
s) in the parameter "t" is suppressed.

3.2.8 Password protection (on, OFF)

If password protection has been activated (on), settings can only be made after the cor-
rect password has been entered (0...999).

3.2.9 Factory settings FAC

Activating the factory settings will reset all modified settings, except interface parame-
ters, to the default upon delivery.

3.2.10 External, combined test or reset button T/R

Reset = Press the external button < 1.5 s
Reset with subsequent test= Press the external button > 1.5 s
Stop mode = Press and hold the external button
Stop mode can also be triggered via an interface command and in this case it can only be
reset via the interface.
Only one ISOMETER® may be controlled via an external test/reset button. Galvanic paral-
lel connection of several test or reset inputs for combined testing of insulation monitor-
ing devices is not permitted.

3.2.11 Fault memory

The fault memory can be activated or deactivated with the parameter "M" in the "out"
menu. When the fault memory is activated, all pending alarm messages of the LEDs and
relays remain available until they are deleted by using the reset button (internal/external)
or the supply voltage U is turned off.
s

3.2.12 History memory HiS

When the first fault occurs after clearing the history memory, all measured values (that
are marked in the table on Page 18) are saved in the history memory. This data can be
read out using the "HiS" menu item. In order to be able to record a new data record, the
history memory must first be cleared via the menu using "Clr".
isoES425_D00214_00_M_XXEN/01.2019
the alarm indication for the preset time (0...10
s
Function

3.2.13 Interface/protocols

The ISOMETER® uses the serial hardware interface RS-485 with the following protocols:
• BMS
The BMS protocol is an essential component of the Bender measuring device interface
(BMS bus protocol). ASCII characters are used for data transfer.
• IsoData
The ISOMETER® continuously sends an ASCII data string with a cycle of approximately 1 s.
Communication with the ISOMETER® in this mode is not possible and no additional send-
er may be connected via the RS-485 bus cable. The ASCII data string for the ISOMETER® is
described on Page 20.
The parameter address, baud rate and parity for the interface protocols are configured in
the "out" menu.
The IsoData protocol is activated by setting "Adr = 0".
With a valid bus address (i.e. not equal to 0), the BMS protocol is activated.
In this case, the baud rate for the BMS protocol is set to
9,600 baud.
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