DOLD RN 5897 원본 지침 번역 - 페이지 3

{카테고리_이름} DOLD RN 5897에 대한 원본 지침 번역을 온라인으로 검색하거나 PDF를 다운로드하세요. DOLD RN 5897 12 페이지. Varimeter imd insulation monitor

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Function

Behaviour with internal device faults

If internal device faults were detected during the test function, the display

backlight changes into red and an error messages (failure code: „Int.1")

is indicated. The indicator relays K1 and K2 switch to the alarm state.

Behavior on faulty connection

When detecting broken wire on terminals L(+)/L(-), the measurement is

disabled. The reaction time could be up to 2 min. The monitoring relays

K1 and K2 go in alarm state, the backlight changes to red. The display

shows the fault message „L+/L-". After removing the interruption the fault is

automatically reset (max. reaction time up to 2 min) and the measurement

of the insulation resistance is continued.

Stored alarm values remain stored. An interruption of the protective

earth connections PE1/PE2 causes the same reaction as interrupting the

measuring circuit, only the display shows „PE1-PE2".

External control input

To terminals X1/X2 an external combined Test-/Reset button can be

connected. If the terminals X1/X2 are bridged for approx.. 1 s the test mode

is started. This has the same function as pressing the internal test button.

When bridging X1/X2 for > 3 s, a stored alarm will be reset. This has the

same function as pressing the internal reset button.

Programming/setting of parameters/set-up of the insulation monitor

The response values for alarm and pre-alarm can be adjusted via 2 rotary

switches „R

" and „R

" on the front of the device. New setting are immediately

active and do not require a restart of the unit. More settings can be done

with the 3 buttons and the display menu in programming mode. To start the

programming mode, the button „Set/ESC" has to be pressed for approx.

2 s. To avoid unauthorized manipulation, this button as well as the rotary

switches „R

" and „R

" are located behind a sealable transparent cover. When

the device changes to programming mode, the measurement is stopped,

the display back light changes to orange color and the first parameter is

displayed. To scroll the different parameters, the button „Set/ESC" has to

be pressed short. With the 2 scroll buttons (Scroll-Up „" and Scroll-Down

„") the settings can be modified.

The first parameter is the broken wire detection in the measuring circuit

„BrWiD". Possible setting are continuously on („on"), continuously off („oFF")

or only active during self-test. The default is „on".

The second parameter is alarm memory „Mem.". Here are 2 options available

manual reset („on") und auto reset („oFF"). The default value is „oFF".

The third parameter is the relay operation principle „Rel." Settings are:

de-energized on trip („n.c.") and energized on trip („n.o."). The default

value is „n.c.".

The fourth parameter is the type of network connection „Net". Selection

are AC Network(„Ac"),DC-Network („dc") or 3NAC-Network („3nAc"). The

default value is „Ac".

The fifth parameter ist the setting oft the maximum leakage capacity

(„CE[µF]"). This can be adjusted to 30 µF ("30"), 100 µF ("100") and

300 µF ("300"). The default value is „30".

The leave the programming mode the button „Set/ESC" has to be pressed

for 2 s. The settings will be activated and stored permanently. After that the

device makes a restart similar to power on.

Default-Setting of Parameters

Nr.

Parameter

Broken wire detect in measuring circuit

"Broken Wire Detect"

Storing insulation fault message

"Memory"

Switching mode of output relays

"Relay"

Power supply type

"Net"

Max. line capacitance

"CE[µF]"

Circuit Diagram

L(+)

L(-)

A1(+)

L(+) L(-)

U H

PE1

PE2

X1 X2

11 12 14 21 22 24

PE1

Connection Terminals

Terminal designation

Signal description

A1(+), A2

Auxiliarx voltage AC or DC

L(+), L(-)

Connection for measuring ciruit

PE1, PE2

Connection for protective conductor

Control input (combined external

X1, X2

Test- and Reset-input)

11, 12, 13

Alarm signal relay K1(1 changeover contact)

Prewarning signal relay K2 (1 changeover

21, 22, 23

contact)

Default-Set

off

n.c. (normally closed)

de-energized on trip

PE2

M11453_b

06.05.21 en / 393A