Technical Specifications and Reference Information
A.3 Technical Specifications for the TD400C
Text Display (TD) User Manual
136 System Manual, 08/2008, A5E00765548-03
A.3 Technical Specifications for the TD400C
Technical Specifications for the TD400C
Table A- 2 Technical Specifications for the TD400C
General TD400C
6AV6640--0AA00-0AX1
Keyboard Customizable faceplate
Supports up to 15 keys
Display STN-Graphic Display with 192 x 64 (Columns x Rows), backlight
PLC interface RS 485 (PPI); 9.6 / 19.2 / 187.5 Kbits/s
Supply voltage (U
N
) 24 VDC, 15 VDC ... 30 VDC, safety extra low voltage, NEC Class 2 or limited power source
(supplied by the S7-200 CPU, mains adapter or a 24 VDC external supply). The TD device
has no integrated means of protection against strong interference pulses in the microsecond
range (surge impulse). If the power being supplied has no appropriate means of protection,
then a surge voltage protector should be pre-connected.
Current consumption (I
N
) Typical 41 mA
Inrush current Maximum 570 mA
Degree of protection IP 65
1
(mounted on front of the panel)
IP 20 (mounted on casing)
Noise emission <45dB(A) to DIN 45635 (no fan)
1 To ensure compliance of the TD400C with IP 65 and UL 50 Type 4X, you must follow these guidelines. The minimum
panel thickness must be at least 1.5 mm. The mounting screws on the TD device must be tightened to a torque of 0.7 N-m.
The gasket must be replaced whenever the TD device is removed and reinstalled. To procure new gaskets, contact your
Siemens distributor or sales representative.
Table A- 3 Technical Specifications for the TD400C (continued)
General TD400C
6AV6640-0AA00-0AX1
Electromagnetic Compatibility (EMC) (tested with TD/CPU cable)
Emitted interference
Limit class
A to EN 55011 = CISPR 11
Noise immunity on signal
lines
±2kV, Testing according to IEC 61000-4-4; Burst
Noise immunity to discharge
of static electricity
±8kV Air discharge (according to IEC 61000-4-2; ESD)
±6kV Contact discharge (according to IEC 61000-4-2; ESD)
Conducted interference on
DC power supply line
±2kV, Testing according to IEC 61000-4-4; Burst
±1kV according to IEC 61000-4-5; ms-impulse (Surge); (line against line)
±2kV according to IEC 61000-4-5; ms-impulse (Surge); (line against earth)
Power supplies with the same voltage can only be used with additional means of
protection, for example, a surge voltage protector available from the Dehn company, type
BVT AD 24, order No. 918 402.
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