SBC PCD2.M5 Series - PCD2.A250, 8 Relays with Make Contacts, Without Contact Protection

Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 12│2014-07-24
Saia-Burgess Controls AG
Digital output modules
Input/output (I/O) modules
6-36
6
6.5.4 PCD2.A250, 8 relays with make contacts, without contact protection
Application
The module contains 8 relays with normally-open contacts for direct or alternating
current up to 2 A, 48 VAC. The module is especially suited wherever AC switching
circuitswithinfrequentswitchinghavetobecontrolled.Forspacereasons,thereis
no integrated contact protection.
Technical data
Number of outputs: 4 + 4 make contacts with shared terminal
Typeofrelay(typical): RE 030024, SCHRACK
Operating mode: > 12 V, > 100 mA
Switchingcapacity:*)
(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
coil
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
Output delay: typically 5 ms at 24 VDC
Resistance to interference:
acc. 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
Terminals: Pluggable14-polescrewterminalblock(440548690),
for wires up to 0.6 mm²
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 clearances between circuit
paths too small.
The Annex, Section A.4 "Relay contacts" contains measurement details and suggested
wiringfortherelaycontacts.Forsafeswitchingandalongservicelife,theseguresmustbe
observed.