Maximum Current On Mcb 112; Wiring Of Sto - Danfoss VLT PTC Thermistor Card MCB 112 Operating Manual

VLT® PTC Thermistor Card MCB 112
Operating Guide
6. At commissioning and after modification of the plant, check the sensor resistance with a suitable measuring instrument. If
the resistance between terminals 1 and 2 is <50 Ω, examine the sensor circuit for a short circuit.

3.5 Maximum Current on MCB 112

Motor protection
MCB 112 PTC
Thermistor Option B ZIEHL industrie-elektronik GmbH + Co KG
Code No. 130B1137 Daimlerstrasse 13, 74523 Schwäbisch Hall
0102
!
SEE MANUAL FOR
ADDITIONAL INSTRUCTIONS
PTC
T1 T2 NC NC NC NC
X44
1 2 3 4 5
12 13 18 19 27 29 32 33 20 37
TP TP
PTC
M 3~
Illustration 5: Wiring Diagram
T10 10 mA
T12 60 mA
Terminal 12 24 V DC supply voltage
Terminal 13 24 V DC supply voltage
T37 (X44/12) Output terminal on the VLT
Terminal 37 Input terminal on the control card.
X44/10 Logic output signals the status in case of failure.

3.6 Wiring of STO

Procedure
1.
Remove the jumper wire between control terminals 37 and 12, or 13.
Cutting or breaking the jumper is not sufficient to avoid short circuiting.
16 | Danfoss A/S © 2022.08
www.ziehl.de
PTB 14 ATEX 3012U
II (2) G [Ex eb Gb] [Ex db Gb]
II (2) D [Ex tb Db]
10 20-28 VDC 10 mA
12 20-28 VDC 60 mA
LOGIC SAFE STOP
NC NC NC OUT NC T37
6 7 8 9 10 11 12
PTC Thermistor Card MCB 112 option.
®
Installation
AQ267038105120en-000101 / 130R0104