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3.6.2
Solid state relay (SSR) digital outputs
The pRack PR300T also features a Version with solid state relays (SSR) on
some models for controlling devices that require an unlimited number of
switching cycles and thus would not be supported by electromechanical
relays.
Important: the SSRs can control resistive loads powered at 24 Vac/
Vdc, maximum power Pmax= 10 W. For details see paragraph 2.2.2.
The fi gure shows a connection example for resistive loads.
An example of resistive loads is illustrated in the the following fi gure:
The following fi gure illustrates correct applications for inductive loads.
J11 pLAN
J10
pR300T
pR300
FieldBus card
J1
J24
J2
J3
Fig. 3.m
J1 2
J11 pLAN
J10
pR300T
FieldBus card
J1
J24
J2
J3
Fig. 3.n
The table below shows the reference outputs for pRack models fi tted
with SSR outputs.
Hardware Version
Reference Relay SSR
S
7, 8
M
7, 8, 12, 13
L
7, 8, 12, 13, 14, 15
Important: the SSR relay load is powered at 24 Vac/Vdc, thus all the
other terminals in the group must be powered at 24 Vac/Vdc due to
the absence of double insulation within the group.
3.6.3
Summary table of digital outputs according to
the Versions available
Hardware
NO contacts NC contacts
Version
Models PRK100**A* and PRK100**B*
Compact
5
-
S
6
-
M
9
-
L
12
-
Copyright HPL March 2021
Fig. 3.l
external SSR
input
load
management
J1 5
J1 6
J1 2
J1 3
J1 4
4
3
2
1
J2 1
J22
J2 5 BMS2
J2 6 FBus2
J1 9
B M S card
J4
J5
J7
J6
Dedicated or the same of
external SSR
G-G0 but not in common
input
load
with other external load
management
J1 5
J1 6
J1 7
J1 3
J1 4
4
3
2
1
J2 1
J22
J23 FB
J2 5 BMS2
J2 6 FBus2
J1 9
J20
B M S card
J4
J5
J7
J6
Terminal
J14, J15
J14, J15, J17, J18
J14, J15, J17, J18, J21
Tab. 3.k
changeover
total no.
SSR relays
contacts
of outputs
-
7
2 (1, 2)
-
8
2 (7, 8)
2 (8, 13)
13
2 (7, 12)
4 (7, 12, 14,
2 (8, 13)
18
15)
Models PRK100**C* and PRK100**D*
Compact
6
S
7
M
10
L
13
3.6.4
Remote connection of the digital outputs
The Sizes of the cables for the remote connection of the digital outputs
are shown in the following table:
AWG
Size [mm
20
0,5
15
1,5
14
2,5
If the product is installed in industrial environments (application of the EN
61000-6-2 standard) the length of the connections must be less than 30 m.
This length shouldn't be exceeded in any case, to avoid measurement errors.
3.7 pLAN electrical connections
If the selected system confi guration involves the connection of more than
one pRack PR300T board in a pLAN, AWG20/22 twisted pair shielded cable
must be used, with capacitance between the wires less than 90 PF/m.
The maximum length of the pLAN network is 500 m with AWG22 twisted
pair shielded cable.
The boards should be connected in parallel with reference to plug-in
connector J5 (pRack Compact) or J11 (Versions S, M, L).
Important: follow the network polarity: RX/TX+ on one board must
be connected to RX/TX+ on the other boards; the same applies to
RX/TX-.
The fi gure shows the diagram for more than one board connected
in a pLAN network powered by the same transformer; this is a typical
application with more than one board connected inside the same
electrical panel.
AWG 20/22
J11 pLAN
J10
pR300T
FieldBus card
J1
J24
J2
J3
Important: pLAN connections are also possible with multiple boards
powered by diff erent transformers, for further details see the pCO Sistema
manual, code: +030220335.
3.7.1
Connecting the terminals
pRack PR300T features PGDE terminals, both built-in and external
connected via pLAN. Up to two external terminals can be connected, with
pLAN addresses 31 and 32. The connection can be made using 6-wire
telephone cables (connector J10 for S, M, L models) or shielded pair cables
with 3-pin plug-in connectors (J11 for S, M, L models), as shown in the table:
Type of cable
Power supply distance
6-wire
10 m
telephone (J10)
AWG24
200 m
AWG20/22
500 m
25
Page 74 of 172
-
1 (1)
7
-
1 (8)
8
-
3 (8, 12, 13)
13
5 (8, 12, 13,
-
18
14, 15)
2
]
Current
[A]
2 A
6 A
8 A
AWG 20/22
J1 5
J1 2
J1 3
J1 4
J1 6
J11 pLAN
J10
4
3
2
1
J2 1
J2 5 BMS2
J2 6 FBus2
pR300T
J1 9
B M S card
FieldBus card
J4
J1
J5
J24
J2
J6
Fig. 3.o
Power supply
Taken from pRack (150 mA)
Taken from pRack (150 mA)
Separate, from TCONN6J000
P4114S Rev 03
pRack PR300T +0300018EN rel. 1.5 - 02.05.2017
ENG
-
-
-
-
Tab. 3.l
Tab. 3.m
J1 7
J1 2
J22
J23 FBu
J20
J3
J7
Tab. 3.n
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