Ssm/Sbm Connection - Wilo Yonos GIGA2.0-I Installation And Operating Instructions Manual

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7.2

SSM/SBM connection

18 19 20
Fig. 26: Terminal for SSM and SBM
38
Electrical connection
Residual-current device (RCD)
This pump is equipped with a frequency converter. Therefore, it must not be protec-
ted by a residual-current device. Frequency converters can impair the function of re-
sidual-current-operated protection circuits.
NOTICE
This product can cause direct current in the protective earthing conductor. When a
residual-current device (RCD) or a residual-current monitor (RCM) is used for pro-
tection in the case of direct or indirect contact, only an RCD or RCM of type B is per-
missible on the power supply side of this product.
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Labelling:
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Trigger current:> 30 mA
Fuse protection on mains side: max. 25 A (for 3~)
Mains-side fuse protection: max. 16 A (for 1~)
The mains-side fuse protection must correspond to the electrical configuration of the
pump.
Circuit breaker
The use of a circuit breaker is recommended.
NOTICE
Circuit breaker trigger characteristic: B
Overload: 1.13 – 1.45 x I
nom
Short-circuit: 3 – 5 x I
nom
SSM (collective fault signal) or SBM (collective run signal) is connected to terminals
18 ... 20.
The cables of the electrical connection for SBM and SSM do not have to be shielded.
NOTICE
A maximum of 230 V may be applied between the contacts of the relays of SSM and
SBM, never 400 V!
When using 230 V as a switching signal, the same phase must be used between the
two relays.
SSM and SBM are designed as changeover contacts and can each be used as a normally
open contact or normally closed contact. When the pump is voltage-free, the contact is
normally closed contact. The following applies to SSM:
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If a fault is present, the contact at NC is normally open contact.
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The converter bridge to NO is closed.
The following applies to SBM:
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Depending on the configuration, the contact is set to NO or NC.
WILO SE 2022-05