Digital input/output modules SM 323/SM 327

	6ES7 323-1BH01-0AA0	6ES7 323-1BL00-0AA0	6ES7 327-1BH00-0AB0
Supply voltages
Load voltage L+
Rated value (DC)	24 V	24 V	24 V
Current consumption
from load voltage L+ (without load), max.	40 mA	80 mA	20 mA
from backplane bus 5 V DC, max.	40 mA	80 mA	60 mA
Power losses
Power loss, typ.	3.5 W	6.5 W	3 W
Connection method
required front connector	20-pin	40-pin	20-pin
Isochronous mode
Isochronous mode	No	No	No
Digital inputs
Number of digital inputs	8	16	8; 8 hard-wired, 8 others individually parameterizable
Number of simultaneously controllable inputs
all mounting positions
Concurrently controllable inputs, up to 40 °C	8	16	16
Concurrently controllable inputs, up to 60 °C	8	8	16
Input characteristic curve acc. to IEC 1131, Type 1	Yes	Yes	Yes
Input voltage
Rated value, DC	24 V	24 V	24 V
for signal "0"	-30 to +5 V	-30 to +5 V	-30 to +5 V
for signal "1"	13 to 30 V	13 to 30 V	15 to 30 V
Input current
for signal "1", typ.	7 mA	7 mA	6 mA
Input delay (for rated value of input voltage)
for standard inputs
at "0" to "1", min.	1.2 ms	1.2 ms	1.2 ms
at "0" to "1", max.	4.8 ms	4.8 ms	4.8 ms
at "1" to "0", min.	1.2 ms	1.2 ms	1.2 ms
at "1" to "0", max.	4.8 ms	4.8 ms	4.8 ms
Cable length
Cable length, shielded, max.	1 000 m	1 000 m	1 000 m
Cable length unshielded, max.	600 m	600 m	600 m
Digital outputs
Number of digital outputs	8	16	8; can also be parameterized individually as DI
Short-circuit protection	Yes; Electronic	Yes; Electronic	Yes; Electronic
Response threshold, typ.	1 A	1 A	1 A
Limitation of inductive shutdown voltage to	L+ (-53 V)	L+ (-48 V)	L+ (-54 V)
Lamp load, max.	5 W	5 W	5 W
Controlling a digital input	Yes	Yes	Yes
Output voltage
for signal "1", min.	L+ (-0.8 V)	L+ (-0.8 V)	L+ (-1.5 V)
Output current
for signal "1" rated value	0.5 A	0.5 A	0.5 A
for signal "1" permissible range for 0 to 60 °C, min.			5 mA
for signal "1" permissible range for 0 to 60 °C, max.			0.6 A
for signal "1" minimum load current	5 mA	5 mA
for signal "0" residual current, max.	0.5 mA	0.5 mA	0.5 mA
Output delay with resistive load
0 to "1", max.	100 µs	100 µs	350 µs
1 to "0", max.	500 µs	500 µs	500 µs
Parallel switching of 2 outputs
for increased power	No	No	No
for redundant control of a load	Yes; outputs of the same group only	Yes; outputs of the same group only	Yes; outputs of the same group only
Switching frequency
with resistive load, max.	100 Hz	100 Hz	100 Hz
with inductive load, max.	0.5 Hz	0.5 Hz	0.5 Hz
on lamp load, max.	10 Hz	100 Hz	10 Hz
Aggregate current of outputs (per group)
horizontal installation
up to 40 °C, max.		4 A	4 A
up to 60 °C, max.	4 A	3 A	3 A
vertical installation
up to 40 °C, max.	4 A	2 A	2 A
Load resistance range
lower limit	48 Ω	48 Ω	48 Ω
upper limit	4 kΩ	4 kΩ	4 kΩ
Cable length
Cable length, shielded, max.	1 000 m	1 000 m	1 000 m
Cable length unshielded, max.	600 m	600 m	600 m
Encoder
Connectable encoders
2-wire BEROS	Yes	Yes	Yes
permissible quiescent current (2-wire BEROS), max.	2 mA	1.5 mA	1.5 mA
Interrupts/diagnostics/status information
Alarms
Alarms	No	No	No
Diagnoses
Diagnostic functions	No	No	No
Diagnostics indication LED
Status indicator digital output (green)	Yes	Yes	Yes
Status indicator digital input (green)	Yes	Yes	Yes
Isolation
Isolation checked with	500 VDC	500 VDC	500 VDC
Galvanic isolation
Galvanic isolation digital inputs
between the channels	Yes	Yes	No
between the channels, in groups of	8	16
between the channels and the backplane bus	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler
Galvanic isolation digital outputs
between the channels	Yes	Yes	No
between the channels, in groups of	8	8
between the channels and the backplane bus	Yes; Optocoupler	Yes; Optocoupler	Yes; Optocoupler
Permissible potential difference
between different circuits	75 VDC / 60 VAC	75 VDC / 60 VAC	75 VDC / 60 VAC
Dimensions and weight
Dimensions
Width	40 mm	40 mm	40 mm
Height	125 mm	125 mm	125 mm
Depth	120 mm	120 mm	120 mm
Weight
Weight, approx.	220 g	260 g	200 g