Datasheet

Electronic monitoring relays PMDsigma
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]
Insulation monitor
PMD s20
1001753-EN-02-2011-05
 Only one insulation monitor should
be connected to galvanically con-
nected systems.
 A function test involving a real earth
fault (resistance) must be carried
out in order to check that the unit is
properly connected.
 Information given in the “Technical
details” must be followed.
Preparing for operation
Inbetriebnahme_Anschluss
 Supply voltage UB:
– Connect the supply voltage UB
to A1/A2. The supply voltage UB
can also be taken from the
measuring circuit.
 Measuring circuit (system to be
monitored):
– 2-phase system:
– Connect one phase of the moni-
tored system to the terminals
B1/B2 respectively.
– 3-phase system:
– Link terminals B1/B2 and con-
nect them to the system's star
point.
 Connect the output contacts in ac-
cordance with the relevant applica-
tion circuit.
 Function test:
– By pressing a button at terminals
Y1 and Y3
or
– Pressing the rotary knob for at
least 3 seconds
Leerzeilen
Inbetriebnahme
Please note:
Do not connect any cables to undesig-
nated terminals.
Application circuit AC
Inbetriebnahme_Anwendung_Bild_1
L1
N
PE
1L1
1L2
E1
R
e
R
e
F1
F2
T1
Test
Y3
Reset
12
14
11
A1
A2
24
22
21
Y1
Y2
B1
B2
FE
PMD s20