Bender ISOMETER iso1685FR, Manual

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Installation, connection and commissioning
27 iso1685FR(M)_D00002_02_M_XXEN/06.2017
5.2.4 Step-by-step connection of the ISOMETER®iso1685FR
Connect the device with the help of the connection and terminal diagram. Proceed as follows:
1. Connect terminal E and KE to earth (PE)
2. Connect terminal A and B to the BMS bus
3. Connect terminal S to the shield of the bus line (only to one end of the line)
4. Connect terminal L1/+ to the N conductor (neutral point) of the system to be monitored
5. Connect terminal L2/- to L1' (300 V tap) of the system to be monitored
6. Connect terminal A1/A2 to DC 24 V
7. Connect the signal outputs 11/12/14 and 21/22/24 (Insulation fault alarm for the active and passive
methods) and 31/32/34 (device error) for external signalling. The relay outputs 11/12/14 and 21/22/24
are implemented redundantly.
Terminal,
Socket
Connections
I2+, I2– Digital input - currently has no function
I1+, I1– Digital input - currently has no function
A, B, S
• Connection to BMS bus, RS-485, S= shielded (internally connected to PE), terminating switch
"RS-485 Term."
• Modbus RTU connection (iso1685FRM only)
k, l/kT, lT
No function
31, 32, 34
Alarm relay K3 for internal device errors and connection faults
21, 22, 24
Alarm relay K2 for insulation faults
11, 12, 14
Alarm relay K1 for insulation faults
E, KE
Separate connection of E and KE to PE
A1, A2 Connection to U
s
= DC 24 V via fuses, 6 A each
L1/+
Connection to N line
L2/-
Connection to L1' (300 V tap)
The coupling terminals L1/+ and L2/– are locked. To unplug the terminals, the orange sliders
must be slid towards the front (towards the device) to unlock the terminal. Now the terminal
can be unplugged.