Behaviour After Power-On; Functions For Tempering Units - Siemens Expert Series Operating Note

Behaviour after power-on

3.2
After supply voltage switch-on, the unit starts with the remote mode and goes
then into the standby mode. The controller mode is switched off. (SP = OFF).

Functions for tempering units

3.3
KS 50-1 TCont has a lot of possibilities to connect signals coming from and
going to the tempering unit.
w The process value is connected to INP1.
w An output signal of a safety temperature limiter (STL) can be attached
alternatively to di1 to di3. When responding the STL the controller goes into
the switching off mode (stop). The signal is passed on in the protocol (see
page 18).
w The operation of the controller can be accomplished in the remote or in local
operation. For the change-over the inputs di1 to di3 or the F-key are
available. In remote mode values can be given only over the attached
interface; inputs via the front are blocked. Vice versa in local mode set-point
operations over the interface are not permitted. As answer the device
supplies a NAK message.
w For local starting and stopping of the tempering unit push-buttons or
switches can be selected and attached at the inputs di1 to di3. The function
start or stop is released with the change of 0 to 1, independently of the
configuration of di. F n as push-button or switch.
w Selected signals for sensor mode, level alarm or flow alarm can be connected
to di1 to di3. They are only through-handed in the device, but indicated in
the protocol (see page 17).
w The alarm for safety temperature - monitoring can be determined with limit 1
( Lim. 1 ).
w KS 50-1 TCont supplies a continuous signal to control a pump, which can be
connected to OUT1 to OUT6.
w After a stop command the pump is only switched off, if the return flow
temperature is fallen below the adjusted limit, which is defined over the
set-point SP2.
g
If the inputs for start and stop are not wired, then the same functionality can be
achieved in local mode by switching on and off the controller function (for
switching off put the set-point SP to OFF; for switching on enter a valid
set-point). The start instruction corresponds to the control command (r) in the
remote mode, the stop command to the control command (p).
Operating note KS 50-1 TCont 7 Behaviour after power-on
Operation