16-Circuit DC Sink/Source Blocks IC660BBD020,021,022,023, GFK

DC 16-Circuit Sink and Source I/O Blocks
March 2010
GFK-0043H
Description
Specifications
Catalog Numbers
Block type
24/48 VDC 16 Circuit Source I/O Block
Terminal Assembly only
Electronics Assembly only
24 VDC 16 Circuit Source I/O Block
Terminal Assembly only
Electronics Assembly only
24/48 VDC 16 Circuit Sink I/O Block
Terminal Assembly only
Electronics Assembly only
24 VDC 16 Circuit Sink I/O Block
Terminal Assembly only
Electronics Assembly only
Block Specifications
Size (height x width x depth)
A DC 16-Circuit Source I/O Block is an intelligent, configurable module
that can interface to a wide range of discrete DC sensors and actuators.
There are two DC 16-circuit source blocks, which provide current to field
output devices:
▪
▪
24 VDC Source Block, for use with 2- and 3-wire solid-state
sensors and electromechanical sensors.
24/48 VDC Source Block, for use with 3-wire solid-state sensors
and electromechanical sensors.
There are also two DC 16-circuit sink blocks, which receive current from
field output devices:
▪
▪
24 VDC Sink Block, for use with 2- and 3-wire solid-state sensors
and electromechanical sensors.
24/48 VDC Sink Block, for use with 3-wire solid-state sensors and
electromechanical sensors.
Features
DC 16-Circuit Source/Sink I/O Blocks have 16 discrete circuits, each
easily configured to be an input, tristate input, or output. Output circuits
can be connected directly to input circuits without the use of other
components or inversion of logic states.
Control power is tapped off the input/output device voltages wired to the
terminals. No separate block power supply is needed.
Configurable features include:
Output Pulse Test capability
Selectable Input Filter Time from 10ms to 100ms
Output powerup defaults
Output Hold Last State or default
The block’s advanced diagnostics can pinpoint causes of installation and
run-time errors. Diagnostics features of these blocks include:
▪
▪
▪
▪
▪
▪
8.83” (22.44cm) x 3.56” (9.05cm) x 4.42”
(11.23cm)
4 lbs. (1.8 kg)
Unit OK, I/O Enabled
Individual load side indicators
1500V
68.8 Watts with 16 outputs on at 2 Amps.
18-56 VDC (24/48 V), 18-30 VDC (24 V)
10%
150mA typical, 300mA maximum
10ms
Weight
LEDs (I/O Block)
LEDs (each circuit)
Block to block Isolation
Heat Dissipation
Operating voltage
Ripple (maximum)
Required DC power
Power supply dropout time
Input Specifications
For standard input, voltage relative to DCInput ON
24 VDC supply
Source: 16-24 VDC Sink: 0-8 VDC
48 VDC supply*
Source: 32-48 VDC Sink: 0-16 VDC*
Input OFF
24 VDC supply
Source: 0-7 VDC
Sink: 17-24 VDC
48 VDC supply*
Source: 0-14 VDC
Sink: 34-48 VDC*
Input impedance (typical)
5.6K Ohms (24/48V), 1.8K Ohms (24V)
Input processing time (typical)
1.7ms (plus selectable filter delay)
Selectable input filter times
5-100ms
Input diagnostics
Open Wire, Overtemperature, Failed Switch
Output Specifications
Output current (steady state)
2 Amps per circuit
Maximum inrush current
10 Amps up to 10ms
Block output current
12 Amps at 60°C at 30VDC
15 Amps at 35°C at 56VDC
Output OFF leakage current
1.0 mA
Maximum switching frequency
Once per second (high inrush current)
Output turn-on delay (maximum)
1ms
Output voltage drop
2.0 volts maximum at 2 Amps inrush
Minimum Recommended Load
50 mA with No Load enabled
Output Diagnostics
Short Circuit, Overload, No Load, Failed
Switch, Overtemperature
Environmental Specifications
Operating Temperature
-0° to +60°C (32° to +140°F)
Storage Temperature
-40 °C to 100 °C(-40° to +212°F)
Humidity
5% to 95% (non-condensing)
Vibration
5-10 Hz 0.012” displacement, 10-200 Hz at
1G
24/48 VDC
Source In/Out
▪
▪
▪
▪
16 circuit discrete input and output
IC66*BBD020, 6240BP10811DIC66*TSD020
IC66*EBD020 (same as block BBD022)
IC66*BBD022, 6240BP10411DIC66*TSD022
IC66*EBD020 (same as block BBD020)
IC66*BBD021
IC66*TSD021
IC66*EBD021 (same as block BBD023)
IC66*BBD023
IC66*TSD023
IC66*EBD021 (same as block BBD021)
Electronic short circuit protection
Overtemperature protection
Failed switch detection
Open wire detection for tristate inputs
Overload detection and shutdown
Refer to GFK-0867 for product standards and general specifications.
* for 24/48 VDC blocks
No-load detection
1
DC 16-Circuit Sink and Source I/O Blocks
March 2010
GFK-0043H
Using this Datasheet
This datasheet summarizes information about block installation,
configuration, and diagnostics. Your primary reference should be the
Discrete and Analog Blocks User’s Manual. It includes detailed
instructions for block installation and configuration.
For additional information about systems and communications, including
bus specifications, refer to the I/O System and Communications Manual.
For details about GMR, please refer to the GMR User’s Manual.
Changes for this Release
This release includes the module updates listed below. No field upgrade
kit is available.
Catalog Number
Current
Revision
Revisions
Affected
TÜV
Approved
Block
Type
IC660BBD020
W, X
Yes
Source
IC660EBD020
W, X
Yes
IC660BBD022
V, W, X
No
IC660BXD022
V, X
No
IC660BBD020CA
W, X
Yes
IC660EBD020CA
W, X
Yes
IC660BBD022CA
W, X
No
IC660BBD022VCA1
N/A
No
IC661BBD020
V, X
No
IC661BBD022
V, X
No
6240BP10811D
V, X
No
6240BP10821D
V, X
No
6240BP10411D
V, X
No
V, X
No
W
Yes
Yes
Catalog Number
New
Revision
TÜV
Approved
Block
Type
IC660BBD020
X
Y
Yes
6240BP10421D
IC660EBD020
X
Y
Yes
IC660BBD021
IC660BBD022
X
Y
No
IC660EBD021
W
IC660BXD022
X
Y
No
IC660BBD023
W
No
IC660BBD020CA
X
Y
Yes
IC660BBD021CA
W
Yes
IC660BBD023CA
W
No
IC660EBD020CA
X
Y
Yes
IC660BBD022CA
X
Y
No
IC661BBD020
X
Y
No
IC661BBD022
X
Y
No
6240BP10811D
X
Y
No
6240BP10821D
X
Y
No
6240BP10411D
X
Y
No
6240BP10421D
X
Y
No
IC660BBD021
W
X
Yes
Yes
IC660EBD021
W
X
IC660BBD023
W
X
No
IC660BBD021CA
W
X
Yes
IC660BBD023CA
W
X
No
Source
Sink
These blocks are backward-compatible with previous block versions of
the same type. However, their Terminal Assemblies are not backward
compatible. The Electronics Assembly can be used to replace an earlier
Electronics Assembly of the same type.
The Terminal Assemblies of these blocks are not compatible with some
earlier versions of the Electronics Assemblies.
Block Type
Sink
Problems Resolved for this Release
This release replaces all previous versions of these products. There are
no compatibility issues with older block versions.
In the product revisions listed in the following table, output pulse tests
may not generate No Load faults for even-numbered output circuits as
expected, when they are operated either without loads, or with load
currents that are less than 50mA (50mA is the minimum required to
avoid a No Load fault). No Load faults are reported for all output circuits,
when appropriate, when the output is turned on by either the application
or a Genius Hand-held Monitor.
Terminal
Assembly
Not Compatible with
Electronics
Assemblies
24/48 VDC Source
Block (IC66*BBD020,
6240BP10811D)
IC66*TSD020
(version C or later)
IC66*ELD020 any version
IC66*EBD020 versions A
to E
24 VDC Source Block
(IC66*BBD022,
6240BP10411D)
IC66*TBD022
(version B or later)
IC66*ELD020 any version
IC66*EBD020 versions A
to E
24/48 VDC Sink Block
(IC66*BBD021)
IC66*TSD021
(version B or later)
IC66*ELD021 any version
IC66*EBD021 versions A
to D
24 VDC Sink Block
(IC66*BBD023)
IC66*TBD023
(version B or later)
IC66*ELD021 any version
IC66*EBD021 versions A
to D
If the Terminal Assembly will be used to replace an earlier Terminal
Assembly, and the Electronics Assembly is one of the incompatible
versions listed above, the Electronics Assembly can be upgraded to
make it compatible.
The pulse test generates No Load faults for all output circuits, when
appropriate, in the new revisions of these products listed above.
Any Hand-held Monitor can be used with these blocks. HHM version
IC66*HHM501 is required to change baud rate configuration or to
configure the block for redundancy.
Compatibility
For an IC697 series PLC, the CPU and programming software must be
version 2.0 or later. The bus controller must be IC697BEM731C or later.
The issue resolved by this release affects the source/sink block versions
listed in the next table. Customers with an affected hardware version
who experience this issue may upgrade to the new block versions listed
above. Alternatively, they may use the No Load fault indications that are
generated, as appropriate, when an output is turned on, by the
application or by a Genius Hand-held Monitor.
For an IC600 series PLC, the CPU must be rev. 105 or later. For an
IC600 series Plus PLC, rev. 110 or later is required. The programming
software must be rel. 4.02 or later. If the bus controller is model
IC66*CBB900, it must be version C or later. For an IC550 series PLC,
the CPU must be rev. 3.0 or later. The programming software must be
rel. 2.01 or later.
All other versions of the source/sink blocks are unaffected by the issue
described above.
For an IC550 series PLC, the CPU must be rev. 3.0 or later. The
programming software must be rel. 2.01 or later.
2
DC 16-Circuit Sink and Source I/O Blocks
March 2010
GFK-0043H
Block Operation
Note that in GMR applications, Failed Switch operates differently. See
the GMR User’s Manual for details.
Each circuit can be configured as an input, a tristate input, or an output.
If the block is configured as a combination block, output feedback is
provided via the corresponding input references.
Open Wire Diagnostic (standard) Indicates electrical (not mechanical)
malfunctions on a tristate input. The circuit must have a non-inductive
resistor placed as close as practical to the actual dry contacts (such as
across the field device terminals), as shown previously.
16 Circuit DC Source I/O Blocks
Overload Diagnostic (configurable) If Overload Shutdown is enabled,
the block will turn the output off and send an OVERLOAD message if a
load exceeds 2.8 Amps DC continuously for 10ms. currents. Exceeding
these limits may cause an overtemperature fault.
A DC source block has all output devices connected to the negative (-)
side of the power supply. Inputs control the positive (+) side.
DC+
Configured
as an
Input
DC+
Input
Device
Smart
Switch
I/O
1 - 16
Configured
as an
Output
Output
Device
*
.1µfd
LED
DC-
Field
Connections
A load that requires more than 2 Amps DC can be configured not to shut
off at this level or send the OVERLOAD message.
75V
Terminal
Assembly
1200 Ohms
DC-
Electronics
Assembly
*
No Load Diagnostic (configurable) If a load does not continuously
draw 50mA from the output circuit, the block sends a NO LOAD
message. A No Load condition may cause an HHM monitoring the block
to display 0 for the circuit although there is voltage at the output and the
circuit LED is on. This diagnostic should be not be used for circuits on
which very small loads (small relays, transformers, or indicating lamps)
will draw less than 50 mA.
Processor
Note that in GMR applications, No Load operates differently. See the
GMR User’s Manual for details.
5.6K Ohms for 24/48 VDC Blocks
1.8 Ohms for 24 VDC Blocks
Operating Note
16 Circuit DC Sink I/O Blocks
A DC sink block has all output devices connected to the positive (+) side
of the power supply. Inputs control the negative (-) side.
When a Genius Hand-held Monitor is used to initiate an output pulse
test, it may display a PULSE TEST FAILED message after the test
completes. A Pulse Test COMREQ may return Status Code 2048
“Device did not accept the message, or timed out.”
DC+
DC+
.1µfd
Configured
as an
Output
This occurs more frequently when the output points have No Load fault
reporting enabled and some, or all, of the output points physically have
no load, or are operated with load currents less than 50mA. (50mA is the
minimum required to avoid a “No Load” fault.) If this issue occurs, repeat
the output pulse test command.
1200 Ohms
Output
Device
I/O
1 - 16
Configured
as an
Input
LED
*
Smart
Switch
Input
Device
Field
DC-
Connections
75V
Processor
Configuration
DCTerminal
Assembly
*
Each block must be configured with a Hand-held Monitor to:
Electronics
Assembly
▪
▪
5.6K Ohms for 24/48 VDC Blocks
1.8 Ohms for 24 VDC Blocks
Enter its Device Number (serial bus address).
Enter its Reference Number (required only for IC600 and IC550
series PLCs only).
In addition, unless all circuits on the block will be inputs, the Block I/O
Type must be set to either Outputs or Combination on the Program Block
ID screen.
Diagnostics
The block always performs its standard diagnostic checks, plus two
configurable output diagnostics. The block reports all faults to the Handheld Monitor, and takes appropriate corrective action.
Note: If a block is configured offline, it must be properly grounded and
have a 75 Ohm resistor installed across its Serial 1 and Serial 2
terminals. See the Discrete and Analog I/O Blocks User’s Manual for
instructions.
Short Circuit Diagnostic (standard) If the instantaneous current
exceeds 10 Amps at turn-on, the block turns the output off. The block
attempts to restart the load; if two attempts are unsuccessful, the output
circuit is forced off and the block sends a SHORT CIRCUIT message.
The cause of the current surge must be removed, then the diagnostic
must be cleared from the HHM or the CPU.
Overtemperature Diagnostic (standard) If the block’s internal
temperature exceeds 120º C, the block sends an OVERTEMPERATURE
message and turns off the circuit to protect its internal electronics.
Failed Switch Diagnostic (standard) For an output, Failed Switch is
reported if the circuit’s switch state is not the same as its commanded
state. The block sends a FAILED SWITCH message identifying the
failed circuit. The logic state of the circuit is set to OFF. If the output
switch has failed shorted (or closed), current flow is not interrupted when
the block forces the output state OFF. Action external to the block must
be taken to remedy the problem. Several additional switch faults
independent of the output state are detected and reported as Failed
Switch faults on both input and output-configured circuits. Examples
include loss of communications with the block’s internal microprocessor
and some internal power supply faults.
3
DC 16-Circuit Sink and Source I/O Blocks
March 2010
GFK-0043H
The rest of the features can be configured either using a Hand-held
Monitor, or by sending a Write Configuration datagram to the block from
the host.
Feature
Circuit
or Block
Factory
Setting
Block Mounting
Genius I/O blocks are considered "open equipment" and therefore must
be installed within a protective enclosure. They should be located in an
area that is clean and free of airborne contaminants. There should be
adequate cooling airflow.
Selections
Baud Rate
B
153.6 std
153.6 std, 153.6 ext, 76.8, 38.4
Block I/O Type
B
input
input, output, combination
Pulse Test
B
enabled
enabled, disabled
Input Filter Time
B
20ms
5-100ms
Circuit I/O Type
C
input
input, output, tristate input
Report Faults
C
yes
yes, no
Hold Last State
C
no
yes, no
Output Default State
C
off
on, off
Detect No Load
C
yes
yes, no
Overload Shutdown
C
yes
yes, no
BSM Present
B
no
yes, no
Output Timeout
B
3 bus scans
2.5, 10 seconds
none, standby, duplex, GMR
Redundancy Mode
B
none
Duplex Default
B
off
on, off
Config. Protect
B
disabled
enabled, disabled
The block can be mounted right side up, or upside down. Leave at least
2 inches of space between blocks. Mount the block by drilling two
screw or bolt holes for 8-32 hardware. Position the block so that the
notches in the upper and lower flanges line up with the mounting holes.
Mount the block using 8-32 screws. Use star washers to provide ground
integrity.
Grounding
The block’s mounting screws must not be used as the only means of
grounding the block. Connect the green ground screw on the block to a
reliable ground system using a short wire lead, minimum size AWG #12
(avg 3.3mm2 in cross-section).
Warning
If mounting screws do not make good ground connection and
the ground screw is not connected to a reliable ground, the
block is not grounded. Electrical shock hazard exists. Death or
personal injury may result.
Removing an Electronics Assembly
The block’s Electronics Assembly can be replaced with a compatible
model without removing field wiring or reconfiguring the block. If you are
replacing an older Electronics Assembly, first read the instructions at
right.
Configuration Note for 24/48VDC Sink and Source Blocks in
GMR Systems
This note applies only to the 24/48VDC blocks (for example:
IC66*BBD020M or later and IC66*BBD021M or later) when they are
used in configured Input Groups in a GMR system. GMR (Genius
Modular Redundancy) is a specific type of application requiring the use
of GMR configuration and program software tools.
Electronics
Assembly
Retaining
Screws
(Qty. 2)
If Input Autotesting for the Input Group is turned ON in the GMR
Configuration, then during the Genius configuration of the blocks in the
group, the Output Pulse Test feature must be disabled. Otherwise,
circuits that would normally pass the Input Autotest are incorrectly
reported as having failed. When Output Autotest is disabled, the Input
Autotest feature functions correctly.
Terminal
Assembly
Connector
Pins
Installation Instructions
Carefully inspect all shipping containers for damage. If any equipment is
damaged, notify the delivery service immediately. Save the damaged
shipping container for inspection by the delivery service. After unpacking
the equipment, record all serial numbers. Save the shipping containers
and packing material in case it is necessary to transport or ship any part
of the system.
1.
Unscrew the retaining screws at the top and bottom of the block.
2.
Using a Block Puller (IC660BLM507), engage the tabs in the first
vent slots. Move the tool to the center of the block and squeeze the
handle.
Pull the Electronics Assembly upward.
3.
Installation in Hazardous Locations
Warning
The following information is for products bearing the UL marking for
Hazardous Locations:
•
•
•
•
If power is applied to the field terminals, power is also exposed
on the connector pins at the base of the Terminal Assembly, and
electrical shock hazard exists. Do not touch the connector pins!
Death or injury may result.
THIS EQUIPMENT IS SUITABLE FOR USE IN CLASS I,
DIVISION 2, GROUPS A, B, C, D OR NON-HAZARDOUS
LOCATIONS ONLY.
WARNING - EXPLOSION HAZARD - SUBSTITUTION OF
COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I,
DIVISION 2;
WARNING - EXPLOSION HAZARD - WHEN IN HAZARDOUS
LOCATIONS, TURN OFF POWER BEFORE REPLACING OR
WIRING MODULES; AND
WARNING - EXPLOSION HAZARD - DO NOT DISCONNECT
EQUIPMENT UNLESS POWER HAS BEEN SWITCHED OFF OR
THE AREA IS KNOWN TO BE NONHAZARDOUS.
Inserting an Electronics Assembly
1.
Align the Electronics Assembly in the guides and push down firmly.
Caution
2.
4
Do not exert excessive force; it may damage the block.
If unusual resistance is met, remove the Electronics Assembly. If
power is applied to the block, DO NOT TOUCH THE CONNECTOR
PINS! Inspect the Terminal Assembly, connector receptacle, and
connector edge board (on the Electronics Assembly). Be sure the
DC 16-Circuit Sink and Source I/O Blocks
March 2010
GFK-0043H
keying matches. Remove any obstacles and reinsert the
Electronics Assembly. Pay close attention to the alignment of the
guide pins.
Start
of Bus
Terminating
Resistor
Terminating
Resistor
Note: Before hot inserting an Electronics Assembly, be sure that
all connector pins are straight and that the Electronics Assembly is
lined up squarely with the Terminal Assembly. Failure to insert the
Electronics Assembly so that all pins mate simultaneously may
result in the block not powering up correctly, or being repeatedly
added and lost by its bus controller.
3.
End
of Bus
Serial 1
Serial 2
Shield In
Shield Out
Serial 1
Serial 2
Shield In
Shield Out
Wiring for a Bus Switching Module
Secure the Electronics Assembly with the screws on the top and
bottom of the Terminal Assembly.
If the block will be a BSM Controller, attach the Bus Switching Module to
the block’s serial bus terminals. Attach the serial bus cables to the BSM
as described in the Bus Switching Module datasheet. Wire the BSM like
a load to circuit 1. Connect either BSM pigtail wire to terminal 6.
Connect the other BSM wire to DC-.
Replacing an Older Electronics Assembly
If the Electronics Assembly (IC66*EBD020 or EBD021) will replace
Electronics Assembly model IC66*ELD020, or ELD021 (only), follow the
steps below. Otherwise, some inputs may operate incorrectly.
Power Connections
1.
Before removing the old Electronics Assembly from the Terminal
Assembly, connect a Hand-held Monitor to the block.
2.
If there is any other HHM currently connected anywhere on the bus,
it must be disconnected, not just turned off.
Connect a DC power source to the DC+ terminal (5) and the return to the
DC- terminal (22). Depending on the layout and current loads, positive
and negative connections can be bussed and made by individual wires
back to the block or power source.
3.
Power up the HHM and proceed to the Block/Bus Status menu.
Select the block as the “active” block on the HHM.
Connections for a DC Source Block
4.
Proceed to the MNTR/CTRL REF menu. Then:
5.
a.
Monitor one of the first eight circuits on the block (for
example, circuit #1). Press the RELEAS key.
b.
Monitor one of the second eight circuits on the block (for
example, circuit #90. Press RELEAS.
Any circuit can be an input or output. Connect one terminal of the device
to the block (terminals 6-21). Connect outputs to DC- and inputs to DC+.
Connect outputs to the negative side of the power supply and inputs to
the positive side. No logic inversion is needed.
5
Press the Hand-held Monitor OFF key and disconnect the HHM
from the block.
DC+
6
1
6.
Power down the block. Remove the Electronics Assembly.
7
2
7.
Insert the new Electronics Assembly. Power up the block.
8
3
9
4
10
5
11
6
12
7
13
8
14
9
If the new Electronics Assembly was installed without following these
steps and the block is powered up, inputs may be operating incorrectly.
Connect a Hand-held Monitor and follow the procedure described above.
Block Wiring
2
All terminals accept one AWG #12 wire (avg 3.3mm cross-section) or
two AWG #14 wires (each avg 2.1mm2 in cross-section). The minimum
recommended wire size is AWG #22 (avg .36mm2 in cross-section).
FIELD
INPUT
DEVICES
FIELD
OUTPUT
DEVICES
15 10
LOAD
16 11
Block terminals can also accommodate spade or ring terminals up to
0.27 inch (6.85mm) wide with a minimum opening for a #6 screw, and up
to 0.20 inch (5.1mm) depth from the screw center to the back barrier. Be
sure unshielded wire ends are not longer than 2 inches (5 cm).
DC+
DC-
17 12
LOAD
18 13
19 14
Do not overtorque the terminal screws. Recommended torque for all
terminals is 6 in/lb (.678 N/M).
20 15
Serial Bus Wiring
22
LOAD
21 16
Using one of the cable types recommended in the System and
Communications User’s Manual, connect the serial bus to terminals 1- 4.
(If a Bus Switching Module will be connected directly to the block, see
below instead).
LOAD
DC-
DC Source Block, Wiring for Tristate Inputs
If any input is configured as a Tristate Input, install a resistor across the
dry contacts of the input device. This added resistance is required to use
the Open Wire diagnostic. The LED will glow dimly as a result.
+
1
SERIAL 1
2
SERIAL 2
3
SHIELD IN
4
SHIELD OUT
IN
-
If the block is at either end of the bus, connect a terminating resistor of
the appropriate type (see the System and Communications User’s
Manual for details) across its Serial 1 and Serial 2 terminals.
For a 24/48 VDC block, the resistor be 5.1K Ohms, 1/2 Watt or larger.
For a 24 VDC block, it should be 1.6K Ohms.
5
DC 16-Circuit Sink and Source I/O Blocks
March 2010
GFK-0043H
DC Source Block, Power Disconnects
DC Sink Block, Power Disconnects
It is important to wire block power disconnects so that block power and
input power will be removed at the same time. Locate the power
disconnect as shown below.
YES
It is important to wire block power disconnects so that block power and
input power will be removed at the same time. Locate the power
disconnect as shown below.
DC SOURCE
BLOCK
NO
DC SINK
BLOCK
DC+
DC+
LOAD
LOAD
DC-
DCYES
Caution
Caution
If circuit power is not removed at the same time as block power, the
block may power up when multiple inputs are activated, even
though one leg of power has been removed from the block.
If circuit power is not removed at the same time as block power, the
block may power up when multiple inputs are activated, even
though one leg of power has been removed from the block.
Connections for a DC Sink Block
Any circuit can be an input or output. Connect one terminal of the device
to the block (terminals 6-21). Connect outputs to DC+ and inputs to DC.
FIELD
INPUT
DEVICES
Block LEDs
The block's Unit OK and I/O Enabled LEDs show its operating status:
Unit OK
DC+
5
6
1
7
2
8
3
9
4
10
5
11
6
12
7
13
8
14
9
15 10
LOAD
DC-
17 12
LOAD
18 13
19 14
LOAD
20 15
21 16
22
LOAD
DC-
I/O Enabled
Meaning
ON
ON
Block functioning, CPU communicating
ON
OFF
Block functioning, No CPU communications for 3 bus
scans
ON
Blinking
Block functioning, Circuit forced
Blinking
ON
Circuit fault, CPU communicating
Blinking
OFF
Circuit fault, No CPU communications for 3 bus scans
Alternate Blinking
Circuit fault, Circuit forced
Synchronous Blinking
No CPU communications - block number conflict
OFF
No block power, or block faulty
OFF
Each circuit has its own LED. If the circuit is configured as an input, the
LED indicates the presence of threshold voltage at the input terminal. If
the circuit is configured as an output, the LED indicates the actual state
of the load.
16 11
DC+
NO
FIELD
OUTPUT
DEVICES
DC Sink Block, Wiring for Tristate Inputs
If any input is configured as a Tristate Input, install a resistor across the
dry contacts of the input device. This added resistance is required to use
the Open Wire diagnostic. The LED will glow dimly as a result.
+
IN
-
For a 24/48 VDC block, the resistor be 5.1K Ohms, 1/2 Watt or larger.
For a 24 VDC block, it should be 1.6K Ohms.
6
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