eloProg - Vers. 1.0
23
SAFETY RELAYS (485EPR02, 485EPR04)
Characteristics of the output circuit
The 485EPR02/485EPR04 units use guided contact safety relays, each of which provides
two
N.O. contacts and one N.C contact in addition to the N.C. feedback contact
.
The 485EPR02 unit uses two safety relays and the 485EPR04 uses four.
Excitation voltage
17...31 VDC
Minimum switchable voltage
10 VDC
Minimum switchable current
20 mA
Maximum switchable voltage (DC)
250VDC
Maximum switchable voltage (AC)
400VAC
Maximum switchable current
6A
Response time
12ms
Mechanical life of contacts
> 20 x 10
6
Table 13
Î
To guarantee correct isolation and avoid the risk of premature ageing of or damage to the
relays, each output line must be protected using a delay 3.5A fuse and the load
characteristics must be consistent with those specified in Table 13.
Î
See the "485EPR02 -
485EPR04
" section (for further details on these relays).
485EPR02/485EPR04 internal contacts
Figure 6
