4
Operating Voltage
䊳
The repeater should only be supplied with a regulated safety extra-low voltage (SELV) in accordance with
IEC/EN 60950-1, EN 61131-2 with a maximum of +32 V DC (typ. +24 V DC).
It can be fed in using the 7-pin screw-type terminal block (see Fig. 1) on the upper side of the repeater.
The operating voltage inputs are protected against incorrect pole connection.
Electrical channel
The repeater are fitted with an RS 485 electrical channel. This is a 9-pin Sub-D socket with a screw lock (inside thread
UNC 4-40) (see Fig. 2). The pin assignment complies with the PROFIBUS stan dard. At Pin 6 there is a short circuit-proof
5 V output for supplying external pull-up/pull-down resistors.
Signaling Contacts
At the
7-pin screw-type terminal block (see Fig. 3)
on the upper side of the repeater, floating contacts of a relay are
provided as a signaling contact.
If the
OZD Profi 12M … PRO i
s functioning correctly the contact is closed.
If a fault or power failure occurs, the contact is opened
.
䊳
Always ensure that the correct assignment is provided for the 7-pole terminal block. Make sure that the connecting
leads of the signaling contacts are adequately insulated. Incorrect assignment can result in destruction of the repeater.
Limit values of relay contact
– Max. switching voltage:
60 V DC; 42 V AC
– Max. switching current:
1,0 A
– Max. switching capacity:
30 W (resistive load)
䊳
The voltage connected to the relay must correspond to a safety extra-low voltage (SELV) to IEC/EN 60 950 and must
comply with NEC, Class 2, regulations as stipulated by UL/CSA.
Analog Voltage Outputs
The device features two analog voltage outputs: CH2 and CH3. Each of these delivers a short-circuit-proof output voltage
in the range 0 - 5 V that is dependent on the optical input power at port 2 or port 3 and is for diagnostic purposes, e.g. for
preventive maintenance.
䊳
These voltage outputs are connected to the front side of the repeater with a 3-pin screw terminal (see Fig. 4).
䊳
The screw terminal is suitable for cable leads that have a cross section between 0.2 - 2.5 mm
2
.
Assignments
Fig. 2: Electrical channel – assignment of Sub-D socket
(Designation in line with PROFIBUS standard)
9 / n.c.
8 / RxD/TxD –N
7 / n.c.
6 / + 5 V Output
Ground
n.c.
RxD/TxD –P
Ground
Shield
/ 5
/ 4
/ 3
/ 2
/ 1
+24 V(L1+)
0 V
FAULT
+24 V(L2+)
0 V
Fig. 3: Fault relay contact – assignment of 7-pin terminal block
CH2
GND
CH3
Receive
Signal
Intensity
Fig. 4: Analog voltage outputs – connections for 3-pin
terminal block
+24 V(L1+)
0 V
FAULT
+24 V(L2+)
0 V
Fig. 1: Operating voltage supply – assignment of 7-pin
terminal block
Connections
Summary of Contents for Hirschmann OZD Profi 12M Pro Series
Page 6: ...6 ...
