4
17.03.21 en / 371A
Indicators
Indicators
The operational status of the device is indicated on a 3-colour LED:
Off:
No auxiliary voltage connected
Green:
Normal operation (Insulation resistance in healthy
state)
Red:
Alarm (measured value below alarm response value)
Orange flashing:
Test mode / Measurement stopped procedure
(see flashing code diagramm)
Red flashing:
Failure code (see flashing code diagramm)
Flash code
orange
Status-LED
Description
1
Selftest
(measuring circuit, measuring voltage,
internal tests)
2
Advanced Test
(additional control of indicator relays)
Continously
flashing
Measuring function stopped
Error Indication
Flash code
red
Status-LED
Failure cause
Failure recovery
1
Broken wire detection
on L(+)/L(-).
Check measuring circuit
L(+) and L (-)
2
Broken wire detection
on PE1/PE2.
Check protective earth
connections
PE1 and PE2
3
Parameter failure
Check position of the rotary
switches and avoid undefined
setting positions.
Continously
flashing
Internal failure
detected in
test mode
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.
Continously
flashing
Faulty calibration
values detected in
device memory.
Send device back to manufacturer
for recalobration and examination.
Notes
WARNING
Risk of electrocution!
Danger to life or risk of serious injuries.
• Disconnect the system and device from the power supply and ensure
they remain disconnected during electrical installation.
• Determine voltage free status by using appropriate instruments
• The terminals of the control input X1-X2 have no galvanic separation
to the measuring circuit L1(+) and L2(-) 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 L1(+)-L2(-).
• 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 RP5897/240 on a voltage system and not just by itself.
!
Attention!
• Before checking insulation and voltage, disconnect the monitoring device
RN 5897/240 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!
nfo
Attention!
• The main measuring circuit can be connected with its terminals L1(+) and
L2(-) 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 sy-
stem. The 3 phases have a low-
Ω
ic (approx. 3 – 5
Ω
) connection via
the transformer windings so also insulation failures of the not directly
connected phases are detected. Via the rotary switch "UN" 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 insulation monitor RN 5897/240 can only be used together with a
coupling device.
• If the insulation monitor RN 5897/240 is used in an application according
to EN 61851-23 annex CC, the insulation resistance value has to be read
and evaluated by the supervising PLC, in order to generate a warning
according EN 61851-23 annex CC, when the resistance drops below
500 Ohms/V.
Connection
coupling device
Auxiliary
voltage
Semiconductor
output
M12289_a
Indicator relay
alarm and system error
Protective
conductor
External
control input
