DOLD VARIMETER IMD RN 5897/011 Handmatig - Pagina 6

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Error Indication

Display-Indication

Failure cause

Broken wire detection

on L(+)/L(-).

Broken wire detection

on PE1/PE2.

Rotary switch

"/"R

undefined position.

Only one of the

two rotary switches

is set to "Bus".

Parameters sent via

Modbus although

the rotary switch

is not set to "Bus".

Modbus timeout

detected

Internal failure

detected in

test mode

Faulty calibration

values detected in

device memory.

Internal

communication error

occured

Internal

software error

occured

Failure recovery

Check

measuring circuit

L(+) and L (-)

Check

protective conductor

connections

PE1 and PE2

" in an

Move rotary switch

"/"R

" to a defined

postition.

"/"R

Set both rotary switches

to "Bus".

Send reset command

via Modbus.

"/"R

Lock Modbus timeout,

extend timeout time,

adjust communication with

the master

Press test button again

or restart the unit by

interrupting the auxiliary

supply temporarily.

If the fault remains

permanent, send device

back to manufacturer for

examination.

Send device back

to manufacturer for

recalobration and

examination.

Restart the unit by

interrupting the auxiliary

supply temporarily.

If the fault remains

permanent, send device

back to manufacturer for

examination.

Restart the unit by

interrupting the auxiliary

supply temporarily.

If the fault remains

permanent, send device

back to manufacturer for

examination.

Notes

Risk of electrocution!

Danger to life or risk of serious injuries.

WARNING

• Disconnect the system and device from the power supply and ensure

they remain disconnected during electrical installation.

• The display of the voltage is not in real time. The Value on the display is

updated at the end of a measuring cycle. Determine voltage free status

by using appropriate instruments.

• The terminals of the control input X1-X2 have no galvanic separation to

the measuring circuit L(+) and L(-) and are electrically connected together,

therefore they have to be controlled by volt free contacts or bridge. These

contacts ore bridges must provide a sufficient separation depending on

the mains voltage on L(+)-L(-).

• Please do not connect external voltage to terminals X1/X2. The control

must only be made by bridging X1 and X2.

• The coupling unit RL 5898 or RP 5898 must only be used in conjunction

with the RP5897/011 on a voltage system and not just by itself.

Attention!

• Before checking insulation and voltage, disconnect the monitoring device

RN 5897 from the power source!

• In one voltage system only one insulation monitor can be used. This has

to be observed when interconnecting two separate systems..

• Device terminals PE1 and PE2 must always be connected via separate

lines to different terminal points of the protective-conductor system.

• The device must not be operated without PE1/PE2 connection!

• If telegrams fail in the bus communication due to EMC interference,

grounding the bus cable screening on both sides could be a remedy.

With this earthing, attention must be paid to possibly occuring equalizing

currents, which could occur with larger potential differences between

the bus participants.

Attention!

nfo

• The main measuring circuit can be connected with its terminals L(+) and

L(-) both to the DC and also AC side of a mixed network; it is done most

practically where the primary incoming power supply takes place e.g.

with battery networks with connected inverters on the DC side, with

Generators/Transformers with connected Rectifiers or inverters on the

AC-side. To monitor a 3NAC system the device can be connected single

pole, (L(+) and L(-) are bridged, to the neutral of the 3p4w system. The 3

phases have a low-ohmic (approx. 3 – 5 Ω) connection via the transformer

windings so also insulation failures of the not directly connected phases

are detected. Via the display menu in programming mode the correct

type of network needs to be selected (see „Connection Examples").

• If a monitored AC system includes galvanically connected DC circuits

(e.g. via a rectifier), an insulation failure on the DC side can only be

detected correctly, when a current of min 10 mA can flow via the semi-

conductor connections.

• If a monitored DC system includes galvanically connected AC circuits

(e.g. via an inverter), an insulation failure on the AC side can only be

detected correctly, when a current of min 10 mA can flow via the semi-

conductor connections.

• The measuring circuit of the RN 5897/011 are designed for leakage

capacities up to 1000 µF. The measurement of the insulation resistance

will not be influenced but for the measuring phases longer time periods

are necessary as with smaller capacities. If the max. possible leakage

capacity is known, the device can be adjusted to the required lower

level, which will reduce the response time and measurement time.

• The trigger output Y1/Y2 at RN 5897/011 is galvanic separated from the

rest of the circuit. It determined to be connected to a DOLD insulation

fault location system RR 5886 and RR 5887. Please do not connect

external voltages.

• For the register of the Insulating resistance the value 0xFFFF is transmitted

via Modbus if R

> 2 MΩ. If no valid mains voltage value was measured

or the mains voltage is < 5 V, the value 0xFFFF is transmitted for the

30.06.23 de / 752A