Siemens SIPART PS2 6DR51xx Provozní pokyny stáhnout pdf (Strana 12)

General safety notes

2.4 Measures

SIPART PS2 with and without HART communications

14 Operating Instructions, 09/2008, A5E00074631-08

2.4 Measures

For the sake of safety, the following precautions must be observed:

WARNING

Type of protection "pressure-proof encapsulation"

Devices with "pressure-proof encapsulation" protection may only be opened when off

circuit.

"Intrinsically safe" protection type

"Intrinsically-safe" devices lose their certification as soon as they are operated on circuits

which do not correspond with the test certification valid in their country. The "ia" protection

level of the device is lowered to the "ib" protection level if intrinsically safe circuits with the

"ib" protection level are connected.

Protection type "limited energy" nL (zone 2)

Devices with "limited energy" may be connected and disconnected while in operation.

Protection type "non-sparking" nA (zone 2)

Devices with "non-sparking" protection may only be connected and disconnected when off

circuit.

Exceptions:

Connection lines with unlimited energy as well as internal connectors may be connected or

disconnected under voltage only in the following cases:

• During installation

• During maintenance

• During repairs

CAUTION

For versions 6DR5a*b-*Gc**-****, where a = 0, 2, 5, 6; b = 0, 1; c = G, N, M, P, Q, the

following is applicable:

The device must be protected against power surges of over one joule.

For versions 6DR5a*b-*Gc**-****, where a = 0, 2, 5, 6; b = 0; c = G, N, M, P, Q, the

following is applicable:

The maximum torque on the thread of the cable gland should not exceed 67 Nm.

CAUTION

Electrostatic Sensitive Devices (ESD)

This device contains electrostatic sensitive devices. Electrostatic sensitive devices may be

destroyed by voltages that are undetectable to a human. Voltages of this kind occur as

soon as a component or an assembly is touched by a person who is not grounded against

static electricity. The damage to a module as a result of overvoltage cannot usually be

detected immediately. It may only become apparent after a long period of operation.

Therefore, avoid electrostatic charge.

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Siemens SIPART PS2 6DR51xx Provozní pokyny Strana 12