Saia-Burgess
Controls Ltd.
Hardware Manual for the PCD3 Series│Document 26/789; Version E 5│31.01.2005
Hardware
PCD3.A251
5-36
5
5.3.4 PCD3.A251, 6 change-over and 2 make relay contacts 2A/48VAC
Application
The module contains 8 relays for direct or alternating current up to 2A, 48 VAC.
6 of
them have change-over and 2 of them have make relay contacts.
It is especially suited
wherever perfectly isolated AC switching circuits must be controlled with infrequent
switching. On this module there is no contact protection available.
Technical data
Number of outputs:
6 change-over and 2 make relay contacts
Type of relay (typical):
PE 014024, SCHRACK
Application range:
>12V, >100 mA
Switching rating: *)
(contact lifetime)
2 A, 48 VAC AC1, 0,7 x 10
6
operations
1 A, 48 VAC AC11, 1,0 x 10
6
operations
2 A, 50 VDC DC1, 0,3 x 10
6
operations
3
)
1 A, 24 VDC DC11, 0,1 x 10
6
operations
1
),
3
)
Relay coil supply:
2
)
nominal 24 VDC smoothed or pulsed, 8 mA per relay
Voltage tolerance:
dependent on ambient temperature
20°C: 17.0...35 VDC
30°C: 19.5...35 VDC
40°C: 20.5...32 VDC
50°C: 21.5...30 VDC
Typical output delay:
5 ms at 24 VDC
Resistance to interference:
according to IEC 801-4
4 kV under direct coupling
2 kV under capacitive coupling (whole trunk group)
Internal current consumption:
(from +5 V bus)
1...25 mA
typ. 15 mA
Internal current consumption:
(from V+ bus)
0 mA
External current consumption:
max. 64 mA
Terminal:
Pluggable 24-pole cage clamp terminal (4 405 4958 0)
for wires up to 1mm²
1
) With external protective diode
2
) With reverse voltage protection
3
) These ratings are not UL-listed!
*)
Higher voltages
are not allowed
for this module, because safety standards for
clearance and creepage distances do not comply.
