GE IC660BBD020 DC Discrete I/O Modules
Genius I/O Industrial I/OGenius DC Discrete I/O blocks interface to a wide range of input devices, including both 2–wire and 3–
wire electronic proximity switches. Outputs may be low–power control and indicating devices such as 
relays, contactors, and lamps. These blocks have identical discrete I/O circuits, each easily configured to 
be an input or an output. Output circuits can be directly connected to input circuits without the use of 
other components or inversion of logic states. This flexibility provides maximum design and application 
efficiency. Each circuit contains built–in protection when used as an output, protecting the driver while 
allowing short–time surges. It also protects against shorted loads caused by wiring errors.
DC Discrete I/O Modules
IC660BBD020 IC660BBD021 IC660BBD022 IC660BBD023 IC660BBD024 
Product Name 
Genius Discrete I/O 
Block, 24/48 VDC 
Grouped, 16 Point, 
Source 
Genius Discrete I/O 
Block, 24/48 VDC 
Grouped, 16 Point, Sink 
Genius Discrete I/O 
Block, 24 VDC Grouped, 
16 Point, Source 
Genius Discrete I/O 
Block, 24 VDC Grouped, 
16 Point, Sink 
Genius Discrete I/O 
Block, 12/24 VDC 
Grouped, 32 Point, 
Source 
Lifecycle Status Mature Mature Mature Mature Mature
Network Support Genius Bus Genius Bus Genius Bus Genius Bus Genius Bus 
Input Range 
18-56 VDC (24/48 V) 18-56 VDC (24/48 V) 18-30 VDC (24 V) 18-30 VDC (24 V) 18-30 VDC (24 V) 
Sink/Source Source Sink Source Sink Source 
Output Range 
18-56 VDC (24/48 V) 18-56 VDC (24/48 V) 18-30 VDC (24 V) 18-30 VDC (24 V) 18-30 VDC (24 V) 
Number of Points 16 16 16 16 32
Input and Output Response Time - 
ON/OFF (msec.) 
Input 1.7 msec plus 
configurable filter: 
5 to 100mS for input; 
Output 1.0 msec 
Input 1.7 msec plus 
configurable filter: 
5 to 100mS for input; 
Output 1.0 msec 
Input 1.7 msec plus 
configurable filter: 
5 to 100mS for input; 
Output 1.0 msec 
Input 1.7 msec plus 
configurable filter: 
5 to 100mS for input; 
Output 1.0 msec 
Input 1.4 msec plus 
configurable filter: 
1 to 100mS for input; 
Output 0.5 msec 
Input Impedance 5.6K ohms (24/48V), 
1.8K ohms (24V) 
5.6K ohms (24/48V), 
1.8K ohms (24V) 
5.6K ohms (24/48V), 
1.8K ohms (24V) 
5.6K ohms (24/48V), 
1.8K ohms (24V) 
3.3 K ohms 
Load Current Per Point 2 Amp 2 Amp 2 Amp 2 Amp 0.5 Amp 
Points Per Common One group of 16 One group of 16 One group of 16 One group of 16 One group of 32 
Protection 
Short circuit level sensor 
at the switching device 
Short circuit level sensor 
at the switching device 
Short circuit level sensor 
at the switching device 
Short circuit level sensor 
at the switching device 
Short circuit level sensor 
at the switching device 
Diagnostics 
Input Diagnostics: 
Open wire, 
Overtemperature, 
Failed Switch Output 
Diagnostics: Short 
Circuit, Overload, 
No Load, Failed Switch, 
Overtemperature, 
Pulse Test 
Input Diagnostics: 
Open wire, 
Overtemperature, 
Failed Switch Output 
Diagnostics: Short 
Circuit, Overload, 
No Load, Failed Switch, 
Overtemperature, 
Pulse Test 
Input Diagnostics: 
Open wire, 
Overtemperature, 
Failed Switch Output 
Diagnostics: Short 
Circuit, Overload, 
No Load, Failed Switch, 
Overtemperature, 
Pulse Test 
Input Diagnostics: 
Open wire, 
Overtemperature, 
Failed Switch Output 
Diagnostics: Short 
Circuit, Overload, 
No Load, Failed Switch, 
Overtemperature, 
Pulse Test 
Output Diagnostics: 
Short Circuit, 
Overload, Failed Switch, 
Pulse Test 
Operating Voltage 
18-56 VDC (24/48 V) 18-56 VDC (24/48 V) 18-30 VDC (24 V) 18-30 VDC (24 V) 10-30 VDC 
Dimensions (H x W x D) 
8.83” (22.44cm) x 
3.50” (8.89cm) x 
3.94” (10.00cm) 
8.83” (22.44cm) x 
3.50” (8.89cm) x 
3.94” (10.00cm) 
8.83” (22.44cm) x 
3.50” (8.89cm) x 
3.94” (10.00cm) 
8.83” (22.44cm) x 
3.50” (8.89cm) x 
3.94” (10.00cm) 
8.83” (22.44cm) x 
3.50” (8.89cm) x 
3.94” (10.00cm)

Industrial I/O
Genius DC Discrete I/O blocks interface to a wide range of input devices, including both 2–wire and 3–
wire electronic proximity switches. Outputs may be low–power control and indicating devices such as 
relays, contactors, and lamps. These blocks have identical discrete I/O circuits, each easily configured to 
be an input or an output. Output circuits can be directly connected to input circuits without the use of 
other components or inversion of logic states. This flexibility provides maximum design and application 
efficiency. Each circuit contains built–in protection when used as an output, protecting the driver while 
allowing short–time surges. It also protects against shorted loads caused by wiring errors.
DC Discrete I/O Modules
IC660BBD025 IC660BBS102 IC660BBS103 IC660BBR100 IC660BBR101 
Product Name 
Genius Discrete 
I/O Block, 5/12/24 VDC 
Grouped, 32 Point, Sink 
Genius Discrete 
I/O Block, 115 VAC/125 
VDC Isolated, 8 Point 
Genius Discrete 
I/O Block, 115 VAC/125 
VDC Isolated, 8 Point, 
w/o Failed Switch 
Diagnostic 
Genius Relay Output 
Block, Grouped, 
16 Points, 
Normally Closed
Genius Relay Output 
Block, Grouped, 
16 Points, 
Normally Open
Lifecycle Status Mature Mature Mature Mature Mature
Network Support Genius Bus Genius Bus Genius Bus Genius Bus Genius Bus 
Input Range 
10-30 VDC (12/24 V), 
4.9-5.3 VDC (5 V) 
115 VAC / 125 VDC 115 VAC / 125 VDC N/A N/A 
Sink/Source Sink N/A N/A N/A N/A 
Output Range 
10-30 VDC (12/24 V), 
4.9-5.3 VDC (5 V) 
115 VAC / 125 VDC 115 VAC / 125 VDC 5V to 250 VAC or 5V 
to 220 VDC; Relay 
Normally-Closed Relays
5V to 250 VAC or 5V 
to 220 VDC; Relay 
Normally-Open Relays
Number of Points 32 8 8 16 16
Input and Output Response Time - 
ON/OFF (msec.) 
Input 1.4 msec plus 
configurable filter: 
1 to 100mS for input; 
Output 0.5 msec 
Input 2msec plus 
configurable filter 
10 to 100mS in 10mS 
increments; Outputs 
Zero crossing 
Input 2msec plus 
configurable filter 
0 to 100mS in 10mS 
increments; Outputs 
Zero crossing 
5.0 msec. 5.0 msec. 
Input Impedance 3.3 K ohms 13K ohms 13K ohms N/A N/A 
Load Current Per Point 0.5 Amp 2.0 Amp 2.0 Amp 2 Amp 2 Amp 
Points Per Common One group of 32 Four groups of 2 Four groups of 2 Four groups of 4 Four groups of 4 
Protection 
Short circuit level sensor 
at the switching device 
Internal electronic short 
circuit trip. 100ms (AC), 
10ms (DC) long time trip 
Internal electronic short 
circuit trip. 100ms (AC), 
10ms (DC) long time trip 
N/A N/A 
Diagnostics 
Output Diagnostics: 
Short Circuit, Overload, 
Failed Switch, Pulse Test 
Input Diagnostics: 
Open Wire, 
Overtemperature 
Loss of I/O Power, 
Failed Switch Output 
Diagnostics: Short 
Circuit, Overload, No 
Load, Overtemp., Loss of 
I/O Power, Failed Switch, 
Pulse Test 
Input Diagnostics: 
Open Wire, 
Overtemperature, 
Loss of I/O Power, 
Failed Switch Output 
Diagnostics: Short 
Circuit, Overload, No 
Load, Overtemp., Loss of 
I/O Power, Failed Switch, 
Pulse Test 
None None 
Operating Voltage 10-30 VDC (12/24 V), 
4.9-5.3 VDC (5 V) 
93-132 VAC / 
105-132 VDC 
93-132 VAC / 
105-132 VDC 
93-132 VAC / 
185-265 VAC 
93-132 VAC / 
185-265 VAC 
Dimensions (H x W x D) 
8.83” (22.44cm) x 
3.50” (8.89cm) x 
3.94” (10.00cm) 
8.83” (22.44cm) x 
3.50” (8.89cm) x 
3.94” (10.00cm) 
8.83” (22.44cm) x 
3.50” (8.89cm) x 
3.94” (10.00cm) 
8.83” (22.44cm) x 
3.50” (8.89cm) x 
3.94” (10.00cm) 
8.83” (22.44cm) x 
3.50” (8.89cm) x 
3.94” (10.00cm)