BusWorks®
961/962PB Module User’s Manual ProfiBus Differential I/V Input
__________________________________________________________________
_______________________________________________________________________________________
Acromag, Inc. Tel:248-624-1541 Fax:248-624-9234 Email:
http://www.acromag.com
6
-
-
IN
P
U
T
S
0
,
1
IN
P
U
T
S
0
,
1
1616 IN1-
IN1-
1515 IN1+
IN1+
1313 IN0+
IN0+
1212
1616
1414 IN0-
1313
1111
+
+
V
I
SHIELDED
CABLE
SHIELDED
CABLE
1414 IN0-
1111
1515 IN1+
IN1+
IN1-
IN1-
1212
IN0+
IN0+
NOT E 1
TB1
DC
TB1
DC
VOLTAGE
CURRENT
(962PB)
(961PB)
Ranges: 0-20mA, 4-20mA,
0-11.17mA, 0-1mA DC.
NOTE 1: THIS GROUND CONNECTION IS RECOMMENDED FOR BEST
RESULTS. IF SENSORS ARE INHERENTLY CONNECTED TO GROUND,
USE CAUTION AND AVOID MAKING ADDITIONAL GROUND CONNECTIONS
WHICH COULD GENERATE GROUND LOOPS AND MEASUREMENT ERROR.
Ranges: +10V, +5V,
+2.5V, +1.25V,
+625mV, +313mV,
+156mV, +78mV.
on
of f
RUN
RUN
BUS
RUN
BUS
on
BUS
on
of f
BUS
on
RUN
on
of f
RUN
of f
of f
500Kbps
19.2Kbps
400M
1200M
NODE 32'
PRO FI BUS
BUS
A cr om ag
on
of f
PRO FI BUS
A cr om ag
on
A cr om ag
RUN
A cr om ag
PRO FI BUS
RUN
A cr om ag
BUS
A cr om ag
PRO FI BUS
BUS
A cr om ag
12Mbps
9600bps
93.75Kbps
187.5Kbps
100M
1200M
1000M
1200M
RS485 SIGNAL
REPEATER
of f
1
PRO FI BUS
PRO FI BUS
PRO FI BUS
1.5Mbps
BAUD
200M
LENGTH
61
NODE 2'
NODE 5
NODE 31
NETWORK LENGTH PER
BAUD RATE w/ TYPE A
PROFIBUS CABLE
END OF NETWORK
(TERMINATION ON)
TERMINATION
SWITCH
NODE 2
NODE 1
START OF NETWORK
(TERMINATION REQD)
PROFIBUS MASTER
PLUG-IN CARD
INSTALLED IN PC.
START OF SEGMENT
(TERMINATION ON)
NODE 32
NODE 1'
2
NODE 4
NODE 3
3
31
SEGMENT 2 (UP TO 1200 METERS,
UP TO 32 NODES PER SEGMENT)
4
30
NOTE: THE PROFIBUS CONNECTORS SHOWN HAVE A TERMINATION NETWORK BUILT-IN.
WITH TERMINATION ON, THE OUTGOING CABLE IS DISCONNECTED FROM NETWORK. SWITCH
TERMINATION ON ONLY AT THE BEGINNING AND END OF A NETWORK OR NETWORK SEGMENT.
SEGMENT 1 (UP TO 1200 METERS, UP TO 32 NODES PER SEGMENT)
END OF SEGMENT
(TERMINATION ON)
PROFIBUS MASTER - A
HOST PC WITH PROFIBUS
CARD INSTALLED AND
RUNNING APPLICATION
SOFTWARE.
PROFIBUS RS485 NETWORK
A network segment may contain up to 32 nodes without the use of a signal repeater.
Transmission distance is up to 1200 meters per segment without a repeater.
Termination must be placed at both ends of a network or network-segment.
The total number of nodes and total distance may be extended by using signal repeater(s).
The maximum number of modules possible is further limited by the address range from 0 to 125.
+
33 GND
DC-
32
TB3
TB3
L
S
D
M
S
D
S
L
A
V
E
A
D
D
R
E
S
S
(
H
E
X
)
DC+
31
P
W
R
12 TO 36VDC
OBSERVE PROPER POLARITY
EARTH
GROUND
INPUT POWER
IS ISOLATED
Connect 12-36V DC to the power terminals labeled DC+ & DC-.
Observe proper polarity. For supply connections, use No. 14 AWG
wires rated for at least 75
C.
CAUTION:
Do not exceed 36VDC peak.
IMPORTANT
– External Fuse:
If unit is powered from a supply capable of
delivering more than 1A to the unit, it is recommended that this current be
limited via a high surge tolerant fuse rated for a maximum current of 1A or
less (for example, see Bel Fuse MJS1).
Connect analog input signals to the input terminals as shown below
according to your signal type.
Network
Example ProfiBus System
Connections
Up to 125 slave modules may
network together with a class 1
master using four repeaters
(one repeater every 31 nodes).
Address 0 is typically reserved
for the class 1 master.
Note: 12Mbps installations
require a minimum cable
length of 1M between stations.
TIP: A recommended RS485
repeater for ProfiBus is the
Siemens 6ES79720AA01-
0XA0.
Power
Voltage
Current
12VDC
195mA
15VDC
146mA
24VDC
91mA
36VDC
67mA
CAUTION: Risk of Electric
Shock
– More than one
disconnect switch may be
required to de-energize the
equipment before servicing.
Analog Inputs
Input is DC current (961PB),
or DC voltage (962PB),
according to model number.
Inputs are not isolated
channel-to-channel, except for
small common mode voltages
up to ±4V peak.
