Order number	6ES7221-3AD30-0XB0	6ES7221-3BD30-0XB0
	SIGNAL BOARD SB 1221, 4 DI 5VDC 200KHZ	SIGNAL BOARD SB 1221, 4 DI 24VDC 200KHZ
Product type designation
Input current
from backplane bus 5 V DC, typ.	50 mA	50 mA
Output voltage
Power supply to the transmitters
● Supply current, max.	4 mA; per channel	4 mA; per channel
Power losses
Power loss, typ.	1 W	1 W
Digital inputs
Number of digital inputs	4; Current-sourcing	4; Current-sourcing
● In groups of	1	1
Input characteristic curve in accordance with IEC 61131, type 1	Yes
Input characteristic curve in accordance with IEC 61131, type 2		Yes
Number of simultaneously controllable inputs
all mounting positions
— up to 40 °C, max.	4	4
Input voltage
● Type of input voltage	DC	DC
● Rated value (DC)	5 V	24 V
● for signal "0"	0 to 1 V	0 to 5 V
● for signal "1"	2 to 6 V
Input current
● for signal "0", max. (permissible quiescent current)	3 mA	2 mA
● for signal "1", min.	6 mA	5.8 mA
● for signal "1", typ.		14 mA
Input delay (for rated value of input voltage)
for standard inputs
— Parameterizable	Yes; 0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms ａnd 12.8 ms, selectable in groups of four	Yes; 0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms ａnd 12.8 ms, selectable in groups of four
— at "0" to "1", max.	2 µs	2.5 µs
for interrupt inputs
— Parameterizable	Yes	Yes
for counter/technological functions
— Parameterizable	Yes	Yes
Cable length
● shielded, max.	50 m; shielded, twisted pair	50 m; Standard input: 500 m, high-speed counters: 50 m
Digital outputs
Number of digital outputs	0	0
short-circuit protection	No	No
Interrupts/diagnostics/status information
Alarms
● Alarms	Yes	Yes
Diagnostic messages
● Diagnostic functions	Yes	Yes
Diagnostics indication LED
● for status of the inputs	Yes	Yes
Degree ａnd class of protection
Degree of protection to EN 60529
● IP20	Yes	Yes
Standards, approvals, certificates
Marine approval
● Germanischer Lloyd (GL)	Yes	Yes
Ambient conditions
Free fall
● Drop height, max. (in packaging)	0.3 m; five times, in dispatch package	0.3 m; five times, in dispatch package
Ambient temperature in operation
● Permissible temperature range	0 °C to 55 °C horizontal installation, 0 °C to 45 °C vertical installation	-20 °C to +60 °C horizontal mounting, -20 °C to 50 °C vertical mounting, 95% humidity, non-condensing
● Min.	0 °C	-20 °C
● max.	55 °C	60 °C
Storage/transport temperature
● Min.	-40 °C	-40 °C
● max.	70 °C	70 °C
Air pressure acc. to IEC 60068-2-13
● Storage/transport, min.	660 hPa	660 hPa
● Storage/transport, max.	1 080 hPa	1 080 hPa
Relative humidity
● Permissible range (without condensation) at 25 °C	95 %	95 %
Mechanics/material
Type of housing (front)
● plastic	Yes	Yes
Dimensions
Width	38 mm	38 mm
Height	62 mm	62 mm
Depth	21 mm	21 mm
Weights
Weight, approx.	40 g	40 g