AnaLynk A750 User manual

Installation and Operation Manual for
4-20ma Wireless Receiver Model A750
1
1
Analynk Wireless, LLC  790 Cross Pointe Road  Columbus, OH 43 30
Phone: [phone] Fax: [phone] Web: www.analynk.com
Installation and Operation Manual for
4-20mA RF Wireless Receiver Model A750
Rev 1.3
Wireless, LLC

Installation and Operation Manual for
4-20ma Wireless Receiver Model A750
Analynk Wireless, LLC  790 Cross Pointe Road  Columbus, OH 43 30
Phone: [phone] Fax: [phone] Web: www.analynk.com
1 0 Features
• The Model A750 offers simplicity and reliability
in a point to point RF system.
• Designed for easy transmission of 4- 0ma or
other DC signals.
• Two form C alarm relay outputs.
• RF Link, Alarm and LED indicators.
• Two radio power levels available: 1W or 50mW
(A753-LP).
• 11 to 3 Vdc power (nominal 4 Vdc).
• Repeaters can be added to extend range with
no programming.
• Simple dip switch selectable RF channel and
RF Power.
• No software required.
• RSSI (received signal strength indicator).
• Convenient 35mm DIN rail mount installation.
• Designed to interface with A750 receiver.
2 0 Description
The A750 wireless RF instrument is the receiver for the A753 series of process RF transmitters. The
receiver has three outputs: one 4- 0mA proportional to the process variable and two form C relays
(optional open collector). The relays A1 and A correspond to the process transmitter’s switch state
of A1 and A , respectively if transmitter is an A753-ZG.
If transmitter is an A753-BT (Battery Powered), Relay A1 / LED A1 are used to indicate transmitter’s
battery condition (e.g. Low Battery). A third form C relay is utilized for RF detection; if the RF signal
becomes unreliable the RF Link alarm will activate.
In RSSI (received signal strength indicator) mode the RF signal strength can be monitored, this is
helpful to insure reliable RF reception/transmission and antenna alignment. LED indicators indicate
when packets of data are being transmitted and received. Power is provided by the industry standard
+ 4 Vdc (11 to 3 Vdc). The Model 750 can be used with a repeater (Model A759).
Transmitter
A753 Receiver
A750
(sold sepa-
rately)

Installation and Operation Manual for
4-20ma Wireless Receiver Model A750
3
3
Analynk Wireless, LLC  790 Cross Pointe Road  Columbus, OH 43 30
Phone: [phone] Fax: [phone] 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- 0mA 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 A on the transmitter is mapped to A 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 1 5Vac and A 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 Positive +11 to +3 Vdc power supply 7 (A1) Alarm 1 N.O. contacts
Power & 4- 0mA ground 8 (A1) Alarm 1 common
3 4 – 0mA output* 9 (A1) Alarm 1 N.C. contacts
4 RF Link alarm N.O. contacts 10 (A ) Alarm N.O. contacts
5 RF Link alarm common 11 (A ) Alarm common
6 RF Link alarm N.C. contacts 1 (A ) Alarm N.C. contacts
ALARM COMMON
11
RF
RECEIVER
A750
ALARM RELAY
RATINGS:
0.5 A at 1 5 VAC
A at 30 VDC
8
ALARM N.O.
10
ALARM 1 N.O. 7
RF
LINK
A1
PWR RX
ALARM 1 COMMON
ALARM N.C.
1
ALARM 1 N.C.
9
RF LINK
COMMON
A
TX
DC POWER
SUPPLY
+11 to 3 VDC
+ 4 Vdc TYPICAL
RF LINK
ALARM N.O. 4
5
1
4 - 0mA
GROUND
RF LINK
ALARM N.C.
6
4 - 0mA
OUTPUT
3
*Other DC outputs available, refer to label on side of unit.

Installation and Operation Manual for
4-20ma Wireless Receiver Model A750
4
4
Analynk Wireless, LLC  790 Cross Pointe Road  Columbus, OH 43 30
Phone: [phone] Fax: [phone] Web: www.analynk.com
4 0 Setup
Setup for the receiver is accomplished without software. Access the programming buttons and
switches by lifting the access door as shown in figure .
4 1 Power up Sequence
When the A750 is powered, LEDs
light in the following sequence:
Power, RF Link, A1, A . Then either
A1 or A will blink (4 times) - this will
indicate Normal RF Mode or
Repeater mode — see Section 4.4
for configuration. After a brief pause
all LEDs will report the appropriate
status.
4 2 Mode Switch Selection
The mode switches are used for RF
channel selection and RSSI
(received signal strength indication).
Figure 3 shows the location of the
mode switches, program switch and
reset switch.
Note: b000 is binary 000, the
decimal equivalent of decimal 0. The least si nificant bit is switch position 3.
Return all switches to Mode 0(b000) for normal operation. Refer to figure 3 for switch mode
settings.
SWITCH STATUS/ALARM
MODE
SWITCHES
PROGRAM SWITCH
RX
(RECEIVE)
TX (TRANSMIT)
ACCESS
DOOR
RF LINK
SWITCH/LOW BATT STATUS/
ALARM 1
RESET
31
ON
POWER
Figure 2 Access door, switch and LED locations
Figure 3 Mode switch settings
FACTORY USE1015
RF POWER
FACTORY USE
1106
1117
RF CHANNEL SELECT
RSSI MODE
100
4
0113
FACTORY USE
FACTORY USE
010
0011
MODE
SWITCH POSITIONS
NORMAL
0000
RESET
PROGRAM
MODE SWITCH
ON
1 3
ONON
1 13 313
ON
31
ON
1
ON
1 3
ON
1 3
ON
1
ON
3 3

Installation and Operation Manual for
4-20ma Wireless Receiver Model A750
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Analynk Wireless, LLC  790 Cross Pointe Road  Columbus, OH 43 30
Phone: [phone] Fax: [phone] Web: www.analynk.com
Mode 0: Normal operation (b000): set mode
switches for mode 0, press and release the reset
switch. Use this mode for standard 4- 0mA and
switch/alarm output.
Mode 3: RF Channel Select (b011): set mode
switches for mode 3, press and release the reset
switch. There are 8 RF channels available, 0-7.
The present RF channel will be displayed, see
figure 4. To return to normal mode return all
switches to b000 or to change RF, channels press
the program switch and the next incremented
channel will be displayed. Each subsequent press
of the program switch increments the RF channel,
channels will wrap around from 7 to 0. When the
desired channel is selected, press and hold the
program switch (approximately 4 seconds) until
the power LED blinks twice to indicate value has been stored. Programming is complete, return all
switches to b000,
The RF channel must match the RF channel on
the A753 transmitter.
Mode 4: RSSI mode (b100): Set mode switches
for mode 4, press and release the reset switch. In
this mode the strength of the RF signal from the
transmitter can be monitored, this is helpful for
antenna alignment or trouble shooting. Three
LEDs are used for signal strength indication: RF
Link, A1 and A . The signal strength is shown by
the number of on LEDs as shown in figure 5.
Note that the status of RF Link, A1 and A2 are not
displayed in this mode. To exit RSSI mode return
all mode switches to 000.
Figure 3 Mode switch settings
ON
1 3
0
1
3
4
5
6
7
RF CHANNEL
LEDS IN RF
CHANNEL MODE
PROGRAM
RESET
Figure 4 RF channel setting
ON
RSSI
POOR OR NO RECEPTION
LEDS IN RSSI
MODE
1 3
LIMITED RECEPTION
GOOD RECEPTION
EXCELLENT RECEPTION
Figure 5 RSSI mode LED indication

Installation and Operation Manual for
4-20ma Wireless Receiver Model A750
6
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Analynk Wireless, LLC  790 Cross Pointe Road  Columbus, OH 43 30
Phone: [phone] Fax: [phone] Web: www.analynk.com
Mode 6 (b110): RF Power Select: Set mode switches for mode 6 (see figure 6) then press and
release the reset switch. There are 5 RF power settings available (1mW, 10mW, 100mW, 500mW,
1W). After power up sequence, the present RF power setting will be displayed, see figure 7. To
return to normal mode return all switches to b000 or to change RF power setting, press and release
the program switch and the next incremented channel will be displayed. Each subsequent press and
release of the program switch increments the RF power, power setting will wrap around from 4 to 0.
When the desired power level is displayed, press and hold the program switch for five seconds, the
power LED will blink twice to indicate value has been stored. Return all switches to b000,
programming is complete.
4 4 Normal RF or Repeater Mode Configuration
When transmitter initially powers up or unit is reset – Transmitter will go through power up sequence
(see Section 4.1) – the A1 or A LED blinks (4) times to indicate if unit is in Normal RF Mode or
Repeater mode. If the system does not have a repeater (Model A759) – it should be in Normal RF
Mode (A1 will blink 4x at initial power up – see fig ). If system does use a repeater – the unit should
be in Repeater Mode (A will blink 4x at initial power up).
To program for Normal RF or Repeater mode , please do the following.
4.4.1 Lift Access Door to expose mode, reset, and programming switches (see figure ).
4.4. Press Reset switch and then press / hold programming switch.
4.4.3 After initial power up – the Normal RF / Configuration will change from one to the other
by blinking the appropriate A1 or A LED. Release Programming switch.
4.4.4 Repeat process if needed until correct configuration is achieved.
Figure 6 RF power setting
Modes 1, 2, 5, and 7 are for factory use only
(1W) 4
(500mW) 3
(1mW) 0
(100mW)
(10mW) 1
RF POWER
LEDS IN RF
POWER MODE
31
ON
RESET
PROGRAM

Installation and Operation Manual for
4-20ma Wireless Receiver Model A750
7
7
Analynk Wireless, LLC  790 Cross Pointe Road  Columbus, OH 43 30
Phone: [phone] Fax: [phone] Web: www.analynk.com
5 0 Low Battery Indication
Note: The following information only applies if transmitter is battery powered (e.g. A753-BT).
A753-BT (see A753-BT manual for details):
If the Lithium “D” Cell battery/batteries are OK — the A1 Indicator LED will be OFF (> 3.4VDC).
If the Lithium “D” Cell battery/batteries are LOW — the A1 Indicator LED will be ON (< 3.4 VDC).
Note that the transmitter must be on to identify battery condition.
A750 Receiver
If the A753-BT battery/batteries are OK — the A1 Indicator LED will be OFF. Low Battery Alarm N.C.
will remain closed. Low Battery N.O. will remain open.
If the A753-BT battery/batteries are LOW — the A1 Indicator LED will be ON. Low Battery Alarm
N.C. will be open. Low Battery N.O. will be closed.
Note: The A753-BT will read battery status at each transmit interval. At 3.0VDC the transmitter will
cease to transmit.
6 0 RF Link
The RF Link has a 6 second timeout. If a packet from the transmitter is not sent or recognized
within 6 seconds, the RF Link LED will turn off and also trigger the RF Link Relay.
If the transmitter is an A753-BT and has a transmit interval greater than 6 seconds, the RF Link
LED/Relay will toggle (ON/OFF) with every transmission.

Installation and Operation Manual for
4-20ma Wireless Receiver Model A750
8
8
Analynk Wireless, LLC  790 Cross Pointe Road  Columbus, OH 43 30
Phone: [phone] Fax: [phone] Web: www.analynk.com
7 0 Specifications
Output:
(1) 4- 0mA (optional analog outputs are available, refer to label on side of unit)
( ) Dry Contact Relays rated for 0.5A at 1 5Vac and A at 30Vdc.
Accuracy:
16 bit
RF Output:
1 Watt (+30 dBm), 900 MHz FHSS
Optional 50mW (+ 0dBm) 900 MHz FHSS (Model A753-LP)
Power:
+ 4Vdc (11 to +3 Vdc), 5W maximum
Operating Temperature Range:
-40
o
C to +85
o
C
RF Encryption:
56 bit
DIN RAIL MOUNT:
35mm
8 0 Warranty
All Analynk Wireless, LLC products are warranted against factory defects for two
years after date of shipment. An RMA number is required for return shipments to be accepted. To
receive an RMA number contact us by any of the following
Analynk Wireless, LLC
790 Cross Pointe Road
Columbus, OH 43 30
PH: 614-755-5091
Fax: [phone]
Email: [e-mail]

Installation and Operation Manual for
4-20ma Wireless Receiver Model A750
9
9
Analynk Wireless, LLC  790 Cross Pointe Road  Columbus, OH 43 30
Phone: [phone] Fax: [phone] Web: www.analynk.com
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Installation and Operation Manual for
4-20ma Wireless Receiver Model A750
10
10
Analynk Wireless, LLC  790 Cross Pointe Road  Columbus, OH 43 30
Phone: [phone] Fax: [phone] Web: www.analynk.com
This page intentionally left blank

Installation and Operation Manual for
4-20ma Wireless Receiver Model A750
11
11
Analynk Wireless, LLC  790 Cross Pointe Road  Columbus, OH 43 30
Phone: [phone] Fax: [phone] Web: www.analynk.com
This page intentionally left blank

Installation and Operation Manual for
4-20ma Wireless Receiver Model A750
1
1
Analynk Wireless, LLC  790 Cross Pointe Road  Columbus, OH 43 30
Phone: [phone] Fax: [phone] Web: www.analynk.com
Wireless, LLC