Ssm And Sbm Connection; Connection Of Digital, Analogue And Bus Inputs - Wilo Stratos GIGA2.0-I Notice De Montage Et De Mise En Service

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7.2

SSM and SBM connection

7.3 Connection of digital, analogue
and bus inputs
1
2
3
4
Fig. 24: Shield clamp
172
Electrical connection
NOTICE
Circuit breaker trigger characteristic: B
Overload: 1.13 – 1.45 x I
nom
Short-circuit: 3 – 5 x I
nom
18 19 20 21 22 23
Fig. 23: Terminals for SSM and SBM
SSM (collective fault signal) and SBM (collective run signal) are connected to terminals
18 ... 20 and 21 ... 23.
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:
ƒ
If a fault is present, the contact at NC is normally open contact.
ƒ
The converter bridge to NO is closed.
The following applies to SBM:
ƒ
Depending on the configuration, the contact is set to NO or NC.
The cables of the digital inputs, analogue inputs and bus communication must be shiel-
ded via the metal threaded cable gland of the cable bushing (Fig. 18, Item 4, 5 and 6).
See Fig. 24 for shielding.
When used for extra-low voltage cables, up to three cables can be passed through for
each threaded cable gland. Use the appropriate multiple sealing inserts for this purpose.
NOTICE
2-fold sealing inserts are included in the scope of delivery. If 3-fold inserts are re-
quired, procure these inserts on-site.
NOTICE
If two cables have to be connected to one 24 V supply terminal, provide a solution
on-site!
Only one cable per terminal may be connected to the pump!
WILO SE 2021-12