Output Management

Introduction

The Modicon M218 Logic Controller features regular outputs and fast outputs (PTO/PWM/FG).

The following output functions are configurable on transistor outputs:

oHSC (reflex features on HSC threshold)

oPTO

oPWM

oFG

NOTE: All outputs by default can be used as regular outputs.

Fast Output Management Availability

The information below refers to all M218 logic controllers with fast outputs except TM218LDD24DUPHN and TM218LDD40DUPHNB:

Function		HSC		PTO/PWM/FG
Channel Number		0	1	0	1
Regular Output	Q0	HSC0 reflex output0	–	PTO0 Output0	–
	Q1	HSC0 reflex output1	–	PTO0 Output1	–
	Q2	–	HSC2 reflex output0	–	PTO1 Output0
	Q3	–	HSC2 reflex output1	–	PTO1 Output1

NOTE: If a fast output is configured for a specific function, it cannot be used for any other function.

The information below refers to the TM218LDD24DUPHN and TM218LDD40DUPHNB references:

Function		HSC		PTO
Channel Number		0	1	0	1
Regular Output	Q0	–	–	PTO0 Output0	–
	Q1	–	–	PTO0 Output1	–
	Q2	–	–	–	PTO1 Output0
	Q3	–	–	–	PTO1 Output1
	Q4	HSC0 reflex output0	–	–	–
	Q5	HSC0 reflex output1	–	–	–
	Q6	–	HSC2 reflex output0	–	–
	Q7	–	HSC2 reflex output1	–	–

For TM218LDD24DUPHN and TM218LDD40DUPHNB, the HSC reflex output change to (Q4-Q7), allows customers to use PTO and HSC reflex output at same time in application.

NOTE: If a fast output is not configured for a specific function, the output is a regular output by default.

Fallback Modes (Behaviour for Outputs in Stop)

When the controller enters the STOPPED or one of the exception states for any reason, the Local (Embedded and Expansion) outputs are set to the fallback values. Two modes are available:

Set all outputs to default: Each output is set to the configured default value, either 0 or 1 (initially set to 0 in the configuration).

Keep current values: Each output remains in its current state.

The fallback settings that may be configured (fallback to 0, fallback to 1, or fallback to the current state) do not apply to outputs Q0, Q1, Q2 or Q3 if these outputs are configured for PTO, PWM, FG, or HSC operation. If an error is detected and results in the controller entering a fallback state, these outputs will assume a value of 0 regardless of the configured fallback setting.

WARNING

UNINTENDED EQUIPMENT OPERATION

Design and program your system so that controlled equipment assumes a safe state when the controller enters a fallback state if you use outputs Q0, Q1, Q2, or Q3 for PTO, PWM, FG, or HSC operation.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

NOTE:

oFallback configuration for outputs does not apply when outputs Q0,Q1, Q2, and Q3 are used for PTO, PWM, FG or HSC operation. In these cases fallback value is always 0.

oIn case of fallback for PTO operation, any ongoing move is aborted and ramp-down to 0 (controlled stop feature).

Short-circuit or Over-current on Outputs

Some controllers only contain Category 2 relay outputs. See the information concerning your specific reference:

oTM218LDA16DRN

oTM218LDA24DRN

oTM218LDA24DRHN

oTM218LDAE24DRHN

oTM218LDA40DRN

oTM218LDA40DRPHN

oTM218LDAE40DRPHN

oTM218LDA40DR2HN

oTM218LDA40DR4PHN

oTM218LDA60DRN

There is a short-circuit protection for Category 1 from outputs to V-, however there is no other short-circuit protection on the outputs.

For TM218LDA•••PHN, in the case of short-circuit or over-current on outputs, there are different considerations for the 2 categories of outputs:

oCategory 1 (Q0 to Q3): 4 fast outputs

oCategory 2 (Q4 to Q9 or Q15): 6 or 12 relay outputs

The following table describes the actions taken on short-circuits of transistor outputs:

If...	then...
you have short-circuit at 0 V on category 1	the category 1 automatically goes into thermal protection mode (all fast, PWM or FG outputs set to 0; PTO outputs run an emergency stop deceleration) and are then periodically rearmed every 1 second to test the connection state (see warning below). For more information, refer to fast output wiring diagram.
you have short-circuit at 24 V on category 1	no action is taken and the short-circuit can result in equipment damage (see warning below).
you have short-circuit at 0 V or 24 V on category 2	no action is taken and no error is detectable.

If...

then...

you have short-circuit at 0 V on category 1

the category 1 automatically goes into thermal protection mode (all fast, PWM or FG outputs set to 0; PTO outputs run an emergency stop deceleration) and are then periodically rearmed every 1 second to test the connection state (see warning below).

For more information, refer to fast output wiring diagram.

you have short-circuit at 24 V on category 1

no action is taken and the short-circuit can result in equipment damage (see warning below).

you have short-circuit at 0 V or 24 V on category 2

no action is taken and no error is detectable.

For TM218LDD24DUPHN, in the case of short-circuit or over-current on outputs, there are different considerations for the 3 categories of outputs:

oCategory 1 (Q0 to Q3): 4 fast outputs

oCategory 2 (Q4 to Q7): 4 regular outputs

oCategory 3 (Q8 to Q9): 2 regular outputs

The following table describes the actions taken on short-circuits of transistor outputs:

If...	then...
you have short-circuit at 0 V or 24 V on category 1	the category 1 automatically goes into thermal protection mode (all fast, PWM or FG outputs set to predetermined state (1); PTO outputs run an emergency stop deceleration) and are then periodically rearmed every 1 second to test the connection state (see warning below). For more information, refer to fast output wiring diagram. (1) Either 0 or 1 depending on the wiring logic (sink or source) of the output group
you have short-circuit at 24 V on category 2 or 3	the impacted category automatically goes into protection mode (all outputs to 0) and then the category is periodically rearmed every 10 seconds to test the connection state. For more information, refer to regular output wiring diagram.
you have short-circuit at 0 V on category 2 or 3	no action is taken, however, no damage to the equipment is possible.

If...

then...

you have short-circuit at 0 V or 24 V on category 1

the category 1 automatically goes into thermal protection mode (all fast, PWM or FG outputs set to predetermined state (1); PTO outputs run an emergency stop deceleration) and are then periodically rearmed every 1 second to test the connection state (see warning below).

For more information, refer to fast output wiring diagram.

(1) Either 0 or 1 depending on the wiring logic (sink or source) of the output group

you have short-circuit at 24 V on category 2 or 3

the impacted category automatically goes into protection mode (all outputs to 0) and then the category is periodically rearmed every 10 seconds to test the connection state.

For more information, refer to regular output wiring diagram.

you have short-circuit at 0 V on category 2 or 3

no action is taken, however, no damage to the equipment is possible.

For TM218LDD40DUPHNB, in the case of short-circuit or over-current on outputs, there are different considerations for the 4 categories of outputs:

oCategory 1 (Q0 to Q3): 4 fast outputs

oCategory 2 (Q4 to Q7): 4 regular outputs

oCategory 3 (Q8 to Q11): 4 regular outputs

oCategory 4 (Q12 to Q15): 4 regular outputs

The following table describes the actions taken on short-circuits of transistor outputs:

If...	then...
you have short-circuit at 0 V or 24 V on category 1	the category 1 automatically goes into thermal protection mode (all fast, PWM or FG outputs set to predetermined state (1); PTO outputs run an emergency stop deceleration) and are then periodically rearmed every 1 second to test the connection state (see warning below). For more information, refer to fast output wiring diagram. (1) Either 0 or 1 depending on the wiring logic (sink or source) of the output group
you have short-circuit at 24 V on category 2, 3 or 4	the impacted category automatically goes into protection mode (all outputs to 0) and then the category is periodically rearmed every 10 seconds to test the connection state (see warning below). For more information, refer to regular output wiring diagram.
you have short-circuit at 0 V on category 2, 3 or 4	no action is taken, however, no damage to the equipment is possible.

If...

then...

you have short-circuit at 0 V or 24 V on category 1

For more information, refer to fast output wiring diagram.

(1) Either 0 or 1 depending on the wiring logic (sink or source) of the output group

you have short-circuit at 24 V on category 2, 3 or 4

the impacted category automatically goes into protection mode (all outputs to 0) and then the category is periodically rearmed every 10 seconds to test the connection state (see warning below).

For more information, refer to regular output wiring diagram.

you have short-circuit at 0 V on category 2, 3 or 4

no action is taken, however, no damage to the equipment is possible.

NOTE: The information in the tables above does not apply to relay outputs.

For more information on protecting outputs, refer to your controller wiring diagram and to the general wiring rules.

NOTE: The short-circuit diagnostic for each category is provided by the function GetshortcutStatus.

WARNING

UNINTENDED MACHINE START-UP

Inhibit the automatic rearming of outputs if this feature is an undesirable behavior for your machine or process.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

NOTE: The automatic rearming feature can be inhibited. For this controller, use the GetshortcutStatus function to force the category of outputs to remain at 0 (OFF).

The outputs of this equipment do not have built-in reverse polarity protection. Incorrectly connecting polarity can permanently damage the output circuits or otherwise result in unintended operation of the equipment.

NOTICE

DAMAGE TO FAST OUTPUTS

oEnsure the use of adequate protection against short-circuits on the power supply to the fast outputs.

oDo not connect positive voltage to any of the DC fast output terminals.

oComply with the wiring diagrams immediately that follow this message.

Failure to follow these instructions can result in equipment damage.

Example of incorrect wiring on Q2:

1 2 A fast-blow fuse

2 Incorrect wiring

Relay outputs are electromechanical switches capable of carrying significant levels of current and voltage. All electromechanical devices have a limited operational life and must be installed so as to minimize the potential for unintended consequences.

WARNING

INOPERABLE OUTPUTS

Use appropriate, external safety interlocks on outputs where personnel and/or equipment hazards exist.

Failure to follow these instructions can result in death, serious injury, or equipment damage.