Installation and Operation Manual for
4-20ma Wireless Receiver Model A750
3
3
Analynk Wireless, LLC
790 Cross Pointe Road
Columbus, OH 43230
Phone: (614) 755-5091 Fax: (614) 755-5093 Web:
www.analynk.com
3.0 Mounting and Electrical Connections
The receiver is designed to mount on 35mm DIN rail. The connectors are removable for easy
receiver replacement. Figure 1 and table 1 show connections to the receiver.
Figure 1 and table 1 show connections to the receiver. There is one 4-20mA output* and two form C
relays. The relays correspond to the switch or low battery status of the transmitter; A1 on the
transmitter is mapped to A1 on the receiver and A2 on the transmitter is mapped to A2 on the
receiver. A third relay (RF Link) is used to monitor signal integrity. If the signal strength becomes
insufficient for reliable reception/transmission the relay will trigger. Both normally open and normally
closed contacts are available for all relays. Relays are rated for 0.5A at 125Vac and 2A at 30Vdc.
Note:
If the transmitter is battery powered (e.g. A753-BT), the A1 LED and A1 Relay on the A750
indicates low battery status. In low battery condition, the A1 LED will be On and the A1 Relay will be
engaged.
Figure 1 Receiver connections.
Table 1 A750 Receiver connections.
Terminal
Number
Terminal Description
Terminal
Number
Terminal Description
1
Po11 to +32 Vdc power supply
7
(A1) Alarm 1 N.O. contacts
2
Power & 4-20mA ground
8
(A1) Alarm 1 common
3
4 – 20mA output*
9
(A1) Alarm 1 N.C. contacts
4
RF Link alarm N.O. contacts
10
(A2) Alarm 2 N.O. contacts
5
RF Link alarm common
11
(A2) Alarm 2 common
6
RF Link alarm N.C. contacts
12
(A2) Alarm 2 N.C. contacts
ALARM 2 COMMON
11
RF
RECEIVER
A750
ALARM RELAY
RATINGS:
0.5 A at 125 VAC
2 A at 30 VDC
8
ALARM 2 N.O.
10
ALARM 1 N.O.
7
RF
LINK
A1
PWR RX
ALARM 1 COMMON
ALARM 2 N.C.
12
ALARM 1 N.C.
9
RF LINK
COMMON
A2
TX
DC POWER
SUPPLY
+11 to 32 VDC
+24 Vdc TYPICAL
RF LINK
ALARM N.O.
4
5
2
1
4 - 20mA
GROUND
RF LINK
ALARM N.C.
6
4 - 20mA
OUTPUT
3
*Other DC outputs available, refer to label on side of unit.
