Carel pCO5+, Руководство пользователя

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34
ENG
pC0300020EN rel. 1.2 - 07.11.2013
5.6 Digital outputs
Electromechanical relay digital outputs
The controller features digital outputs with electromechanical relays. For
ease of installation, the common terminals of some of the relays have
been grouped together.
The type of insulation is described in the table below. See also the
Technical Specifi cations table.
Type of insulation
Between relays in the same group operational insulation
Between groups of relays reinforced insulation
Between relays and the rest of the
controller
reinforced insulation
Notes:
•
inside each group, the relays have just operational insulation and must
therefore have the same voltage (generally 24 Vac or 110/230 Vac);
•
between groups there is reinforced insulation, so diff erent groups can
have diff erent voltages.
Example of connection diagram (LARGE model):
C1
NO1 NO2 NO3
C1 C4
NO4 NO5 NO6
C4 C7
NO7
C7
NO8
C8
NC8
NO1
2
C1
2
NC1
2
NO1
3
C1
3
NC1
3
C9
NO9
NO1
0
NO1
1
C9
J21
J14 J13 J12
J22
J16 J17
J18 J15
NO1
4
C1
4
NC1
4
NO1
5
C1
5
NC1
5
C1
6
NO1
6
NO1
7
NO1
8
C1
6
J23 FBus2
J25 BMS2 J26 FBus2
4 3 2 1
N
L
110/230-24Vac
Fig. 5.u
C
4
NO4 NO5 NO6
C4 C7
NO7
C7
NO8
C8
NC8
NO1
2
C1
2
NC1
2
NO1
3
C1
3
NC1
3
C9
NO9
NO1
0
NO1
1
C9
J21
J14 J13
J22
J16 J17
J18 J15
NO1
4
C1
4
NC1
4
NO1
5
C1
5
NC1
5
C1
6
NO1
6
NO1
7
NO1
8
C1
6
J23 FBus2
S2 J26 FBus2
4 3 2 1
N
L
110/230-24Vac
Fig. 5.v
Important: The current on the common terminals must not
exceed the capacity (rated current) of each single terminal (8A).
Some relays have change-over contacts.
Relays with change-over contacts
pCO5+ model
Small Medium / Extralarge Large
Output No. 8 8, 12, 13 8, 12, 13
Remote connection of digital outputs
The table below shows the cable sizes required according to the current.
Cross-section (mm2)/AWG Current (A)
0,5/20 2
1,5/15 6
2,5/14 8
Note: When diff erent relay outputs must be operated consecutively
at very close intervals (e.g. star-delta motor starter) in the order of
hundreds of ms, use relays belonging to the same group, according to
the following table.
RELAY GROUPS FOR CONSECUTIVE COMMANDS (~100 ms)
1 2 3
4 -
pCO5+
Large 4 -
pCO5+ Extra-
Large
5
Relè 1, 2, 3, 4 5, 6, 7, 8
9, 10, 11,
12, 13 14, 15, 16,
17, 18 14, 15, 16, 17,
18, 19, 20, 21 22, 23, 24, 25,
26, 27, 28, 29
Tab. 5.d
Important: Using relays that belong to diff erent groups can cause
delays in switching.
5.7 Solid state relay (SSR) digital outputs
pCO5+ controllers are also available in versions with solid-state relays
(SSR) for controlling devices that require an unlimited number of
switching cycles that would not be supported by electromechanical
relays. These outputs are dedicated to resistive loads powered at 224Vac
SELV or 28 to 36 Vdc SELV with max. load current up to 1A or 230 Vac with
max. load current up to 70mA.
Example 1: Connection diagram for resistive load.
NO1 NO2 NO3 C1 C4 NO4 NO5 NO6 C4 C7 NO7 C7 NO8 C8 NC8
24 V
ac/V
dc
Fig. 5.w
Example 2: Connection diagram for inductive or resistive loads, with max.
load current <1 A.
NO5 NO6 C4 C7 NO7 C7 NO8 C8 NC8
24 V
ac/V
dc(*)
SSR ESTERNO/
EXTERNAL SSR
carico/load
input
Fig. 5.x
(*) Dedicated power supply or same power supply as controller: not in
common with the power supply for other external loads (e.g. contactors,
coils).
Important: In applications with SSR outputs:
1. the controller should drive only resistive loads with loads current less
than maximum declared;
2. use an additional external SSR to drive inductive loads;
3.
for AC power supply to resistive loads or external SSRs,
4. use the same power supply as the controller (connected to terminals
G/G0), which must be dedicated and not in common with the power
supply to other devices in the electrical panel (contactors, coils, etc.)
Note: The SSR load is powered at 24 Vac SELV, 28 to 36 Vdc SELV or
230 Vac; consequently all the other terminals in the group must be
powered at the same voltage due to the absence of reinforced insulation
within the group.