TM7SDI8DFS Characteristics

Introduction

This section describes the characteristics of the TM7SDI8DFS module. See also Environmental Characteristics.

DANGER
	FIRE HAZARD Use only the correct wire sizes for the maximum current capacity of the I/O channels and power supplies. 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.

General Characteristics

The following table lists the general characteristics of the TM7SDI8DFS digital input module:

General characteristics
Rated power supply voltage		24 Vdc
Integrated protection		Reverse polarity protection
Status indicators		I/O functions per channel operating state module status
Diagnostics	module run and detected error	indicated by status LED indicator and software status
Diagnostics	inputs / outputs	indicated by status LED indicator and software status
Electrical isolation¹⁾	channel - bus	See note.
Electrical isolation¹⁾	channel - channel	no galvanic isolation
TM5 Bus 5 Vdc current draw		180 mA
24 Vdc I/O segment current draw		87.5 mA
Connection type	inputs / outputs	M12, 8-pin, or M12, 5-pin, A-coded
	module supply	M8, 4-pin
	TM5 link	M12, B-coded
Certifications and standards		Refer to www.se.com for the latest information regarding certifications and standards.
Maximum internal cycle time		1 ms
Minimum cycle time		200 µs
Minimum I/O update time		500 µs
Minimum safety-related response time		6 ms
Id code for firmware update		47996 dec

NOTE ⁽¹⁾ The isolation of the electronic module is 500 Vac RMS between the electronics power by the TM5 to TM7 bus and those powered by 24 Vdc I/O power segment connected to the module. In practice, the electronic module is installed in the bus base, and there is a bridge between the TM5 power bus and the 24 Vdc I/O power segment. The two power circuits reference the same functional ground (FE) through specific components designed to reduce effects of electromagnetic interference. These components are rated at 30 Vdc or 60 Vdc. This effectively reduces isolation of the entire system from the 500 Vac RMS.

Operating Conditions

The following table lists the operating conditions for the TM7SDI8DFS module:

Operating conditions
Mounting orientation		horizontal or vertical
Operating temperature		0...60 °C (+32...140 °F)
Relative humidity		5...95%, non-condensing
Installation at altitudes above sea level:	0...2000 m (0...6561 ft)	no derating for altitude
Installation at altitudes above sea level:	> 2000 m (>6561 ft)	reduction of ambient temperature by 0.5 °C per 100 m (0.9 °F per 328 ft)
EN 60529 protection		IP67

Storage and Transport Conditions

The following table lists the storage and transport conditions for the TM7SDI8DFS module:

Storage and transport conditions
Temperature	-40...+85°C (-40...+185 °F)
Relative humidity	5...95%, non-condensing

Mechanical Characteristics

The following table lists the mechanical characteristics for the TM7SDI8DFS module:

Mechanical characteristics
Dimensions (W x H x D)		53 x 85 x 42 mm (2.086 x 3.35 x 1.65 in.)
Weight		190 g (6.70 oz.)
Torque for connections	M8	Maximum 0.4 Nm (0.29 lbf ft)
Torque for connections	M12	Maximum 0.6 Nm (0.44 lbf ft)

Module Supply Characteristics

The following table lists the module supply characteristics for the TM7SDI8DFS module

Module supply characteristics
Integrated protection	reverse polarity protection
Rated voltage	24 Vdc
Voltage range	18...30 Vdc

Non-Safety-Related Digital Input Characteristics

The following table lists the non-safety-related digital input characteristics of the TM7SDI8DFS module:

Digital input
Number of input channels		2 (without safety functionality)
Rated voltage		24 Vdc
Input filter	hardware	≤ 150 µs
Input circuit		sink
Input voltage		20.4...28.8 Vdc
Input current at 24 Vdc		maximum 7.24 mA
Input resistance		minimum 3.3 kΩ
Switching threshold	low	<5 Vdc
Switching threshold	high	>15 Vdc
Isolation voltage between channel and bus		See note.

NOTE ⁽¹⁾ The isolation of the electronic module is 500 Vac RMS between the electronics power by the TM5 to TM7 bus and those powered by 24 Vdc I/O power segment connected to the module. In practice, the electronic module is installed in the bus base, and there is a bridge between the TM5 power bus and the 24 Vdc I/O power segment. The two power circuits reference the same functional ground (FE) through specific components designed to reduce effects of electromagnetic interference. These components are rated at 30 Vdc or 60 Vdc. This effectively reduces isolation of the entire system from the 500 Vac RMS.

Safety-Related Digital Inputs Characteristics

The following table lists the safety-related digital input characteristics of the TM7SDI8DFS module:

Digital input
Number of input channels		8 safety-related inputs
Rated voltage		24 Vdc
Input filter	hardware	≤ 150 µs
Input filter	software	configuration 0...500 ms
Input circuit		sink
Input voltage		20.4...28.8 Vdc
Input current at 24 Vdc		maximum 8.28 mA
Input resistance		minimum 2.9 kΩ
Switching threshold	low	<5 Vdc
Switching threshold	high	>15 Vdc
Isolation voltage between channel and bus¹⁾		See note.
Error detection time		200 ms

NOTE ⁽¹⁾ The isolation of the electronic module is 500 Vac RMS between the electronics power by the TM5 to TM7 bus and those powered by 24 Vdc I/O power segment connected to the module. In practice, the electronic module is installed in the bus base, and there is a bridge between the TM5 power bus and the 24 Vdc I/O power segment. The two power circuits reference the same functional ground (FE) through specific components designed to reduce effects of electromagnetic interference. These components are rated at 30 Vdc or 60 Vdc. This effectively reduces isolation of the entire system from the 500 Vac RMS.

Non-Safety-Related Digital Output Characteristics

The following table lists the non-safety-related digital output characteristics of the TM7SDI8DFS module:

Digital outputs
Number of output channels	2 (without safety functionality)
Rated voltage	24 Vdc
Rated output current	0.6 A
Total current	1.2 A
Output protection	disable individual channels for over-current or short circuit integrated protection of switching inductances
Design	FET, positive switching output level can be read
Switching voltage	modules supply minus residual voltage
Diagnostics status	Output monitoring
Leakage current when switched off	< 500 µA
Residual voltage	≤ 300 mVdc at rated voltage
Short circuit peak current	< 12.0 A
Peak output current	1.0 A
Braking voltage when switching off inductive loads	50 Vdc
Maximum capacitive load	100 nF
Isolation voltage between channel and bus¹⁾	See note.

NOTE ⁽¹⁾ The isolation of the electronic module is 500 Vac RMS between the electronics power by the TM5 to TM7 bus and those powered by 24 Vdc I/O power segment connected to the module. In practice, the electronic module is installed in the bus base, and there is a bridge between the TM5 power bus and the 24 Vdc I/O power segment. The two power circuits reference the same functional ground (FE) through specific components designed to reduce effects of electromagnetic interference. These components are rated at 30 Vdc or 60 Vdc. This effectively reduces isolation of the entire system from the 500 Vac RMS.

Digital Test (Pulse) Output Characteristics

The following table lists the digital test (pulse) output characteristics of the TM7SDI8DFS module:

Digital test outputs
Rated voltage		24 Vdc
Design		Push-Pull
Switching voltage		equal to module supply minus residual voltage
Rated output current		40 mA
Total current		80 mA
Output protection		Shutdown of individual channels in the event of overload or short circuit. The protective function is provided for a maximum of 30 minutes for a continuous short circuit.
Short circuit peak current		25 A for 15 μs
Short circuit current		100 mA_eff
Leakage current when switched off		0.1 mA
Diagnostics status		Output monitoring
Residual voltage		3 Vdc
Maximum cable length between pulse output and input		maximum of 60 m / 196.85 ft (unshielded) maximum of 400 m / 1312.34 ft (shielded)

Safety-Related Characteristics

The following table lists the safety-related characteristics of the TM7SDI8DFS module:

Criteria	Characteristics Safety-related digital input
Maximum performance level according to EN ISO 13849-1	PL e
Category according to EN ISO 13849-1	CAT 3 when using individual input channels CAT 4 when using input channel pairs (for example SI1 & SI2) or more
Maximum safety integrity level according to EN IEC 62061	SIL 3
Maximum safety integrity level according to EN IEC 61508	SIL 3
Maximum safety integrity level according to EN IEC 61511	SIL 3
PFH	< 1*10^-10
PFD	< 110^-5 at a proof test interval of 10 years < 210^-5 at a proof test interval of 20 years
PT	20 years
DC	>94%
SFF	>90%
MTTFd	2500 years
Life time	Maximum 20 years