Fast Transistor Outputs

Overview

The Modicon M241 Logic Controller has digital outputs embedded:

Reference	Total number of digital outputs	Fast transistor outputs ⁽¹⁾	Relay outputs	Regular transistor outputs
TM241C••24R	10	4	6	0
TM241C••24T TM241C••24U	10	4	0	6
TM241C•40R	16	4	12	0
TM241C•40T TM241C•40U	16	4	0	12
(1) Fast transistor outputs which can be used as 100 kHz PTO outputs

For more information, refer to Output Management.

DANGER
	FIRE HAZARD Use only the correct wire sizes for the maximum current capacity of the I/O channels and power supplies. For relay output (2 A) wiring, use conductors of at least 0.5 mm² (AWG 20) with a temperature rating of at least 80 °C (176 °F). For common conductors of relay output wiring (7 A), or relay output wiring greater than 2 A, use conductors of at least 1.0 mm² (AWG 16) with a temperature rating of at least 80 °C (176 °F). Failure to follow these instructions will result in death or serious injury.

DANGER

FIRE HAZARD

Use only the correct wire sizes for the maximum current capacity of the I/O channels and power supplies.
For relay output (2 A) wiring, use conductors of at least 0.5 mm² (AWG 20) with a temperature rating of at least 80 °C (176 °F).
For common conductors of relay output wiring (7 A), or relay output wiring greater than 2 A, use conductors of at least 1.0 mm² (AWG 16) with a temperature rating of at least 80 °C (176 °F).

Failure to follow these instructions will result in death or serious injury.

WARNING
	UNINTENDED EQUIPMENT OPERATION Do not exceed any of the rated values specified in the environmental and electrical characteristics tables. Failure to follow these instructions can result in death, serious injury, or equipment damage.

The following figure shows the status LEDs for the TM241C••24• controller (the TM241C•40• controllers are similar with 40 LEDs):

LED	Color	Status	Description
0...9	Green	On	The output channel is activated
0...9	Green	Off	The output channel is deactivated

The following table describes the characteristics of the M241 Logic Controller fast transistor outputs:

Characteristic		Value
Characteristic		TM241C•••R	TM241C•••T	TM241C•••U
Number of fast transistor outputs		4 outputs (TR0...TR3)	4 outputs (Q0...Q3)
Number of channel groups		1 common line for TR0...TR3	1 common line for Q0...Q3
Output type		Transistor
Logic type		Source	Source	Sink
Rated output voltage		24 Vdc
Output voltage range		19.2...28.8 Vdc
Rated output current		0.1 A when configured for a fast function
Rated output current		0.5 A when used as a regular output
Leakage current	Source	≤ 0.3 mA
Leakage current	Sink	≤ 2 mA
Total output current per group		2 A
Maximum power of filament lamp		2.4 W max
Derating		No Derating
Turn on time		Max. 2 µs
Turn off time		Max. 2 µs
Protection against short circuit		Yes
Short circuit output peak current		1.3 A max.
Automatic rearming after short circuit or overload		Yes, 12 s
Protection against reverse polarity		Yes
Clamping voltage		Typically 39 Vdc +/- 1 Vdc
Maximum output frequency	PTO	100 kHz
Maximum output frequency	PWM	20 kHz
PWM mode duty rate step		0.1% at 20...1 kHz
Duty rate range		1...99 %
Isolation	Between output and internal logic	500 Vac
Isolation	Between channel groups	500 Vac
Connection type		Removable screw terminal block
Connector insertion/removal durability		Over 100 times
Cable	Type	Shielded, including 24 Vdc power supply
Cable	Length	Maximum 3 m (9.84 ft)

The following figure shows the connection of the fast transistor outputs:

* 2 A fast-blow fuse

Fast output wiring for TR0... TR3:

WARNING
	UNINTENDED EQUIPMENT OPERATION Ensure that the physical wiring respects the connections indicated in the wiring diagram, and, in particular, that both V•+ and V•- are connected, and that only 24Vdc is connected to the V•+ terminal(s) and only 0Vdc is connected to the V•- terminal(s). Failure to follow these instructions can result in death, serious injury, or equipment damage.

The following figure shows the connection of the fast transistor outputs:

* Type T fuse

(1) The V0+, V1+, V2+ and V3+ terminals are not connected internally.

(2) The V0-, V1-, V2- and V3- terminals are not connected internally.

Fast output wiring for Q0... Q3:

WARNING
	UNINTENDED EQUIPMENT OPERATION Ensure that the physical wiring respects the connections indicated in the wiring diagram, and, in particular, that both V•+ and V•- are connected, and that only 24Vdc is connected to the V•+ terminal(s) and only 0Vdc is connected to the V•- terminal(s). Failure to follow these instructions can result in death, serious injury, or equipment damage.

The following figure shows the connection of the fast transistor outputs:

* Type T fuse

(1) The V0+, V1+, V2+ and V3+ terminals are not connected internally.

(2) The V0-, V1-, V2- and V3- terminals are not connected internally.

Fast output wiring for Q0... Q3:

WARNING
	UNINTENDED EQUIPMENT OPERATION Ensure that the physical wiring respects the connections indicated in the wiring diagram, and, in particular, that both V•+ and V•- are connected, and that only 24Vdc is connected to the V•+ terminal(s) and only 0Vdc is connected to the V•- terminal(s). Failure to follow these instructions can result in death, serious injury, or equipment damage.