Siemens AC75 Manuel D’Utilisation

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AC75_ATC_V01.002

Page 492 of 569

10/30/06

Confidential / Released

EXAMPLE 1

 

 

URCs issued when the operating temperature is out of range: 

EXAMPLE 2

 

 

URCs issued when the temperature is back to normal (URC is output once): 

In the following cases, shutdown will be deferred if a critical temperature limit is exceeded: 
• while an emergency call is in progress 
• during a two minute guard period after powerup. This guard period has been introduced in order to allow for

the user to make an emergency call. The start of any one of these calls extends the guard period until the end

of the call. Any other network activity may be terminated by shutdown upon expiry of the guard time. 

While in a "deferred shutdown" situation, the engine continues to measure the temperature and to deliver alert

messages, but deactivates the shutdown functionality. Once the guard period is expired or the call is terminated,

full temperature control will be resumed. If the temperature is still out of range, ME switches off immediately (with-

out another alert message).

CAUTION! Automatic shutdown is a safety feature intended to prevent damage to the module. Extended usage

of the deferred shutdown facilities provided may result in damage to the module, and possibly other severe con-

sequences. 

^SCTM_A: 1

Caution: Battery close to overtemperature limit. 

^SCTM_A: 2

Alert: Battery above overtemperature limit. Engine switches off. 

^SCTM_B: 1

Caution: Module close to overtemperature limit. 

^SCTM_B: 2

Alert: Module is above overtemperature limit and switches off. 

^SCTM_A: -1

Caution: Battery close to undertemperature limit. 

^SCTM_A: -2

Alert: Battery below undertemperature limit. Engine switches off.

^SCTM_B: -1

Caution: Module close to undertemperature limit. 

^SCTM_B: -2

Alert: Module is below undertemperature limit and switches off. 

^SCTM_A: 0

Battery temperature back to normal temperature. 

^SCTM_B: 0

Module back to normal temperature.