Siemens SQM5 Instructions d'exploitation télécharger pdf (Page 15)

SQM5… Reversing Actuators Technical Instructions

155-517P25

Rev. 1, July, 2000

Siemens Building Technologies, Inc. Page 15

maximum signal is present on Y0, Y1, Y2, or Y3, then the actuator will modulate through

the full rotational range in response to a 4 to 12 mA signal applied at ZF. (Maximum

signal can be easily achieved by bridging terminals U4 and Y0.)

See Figure 16.

NOTE: It is possible to configure the actuator for split range operation 12 to 4 mA and

20 to 12 mA. Consult your authorized Siemens Building Technologies

combustion products sales representative for details.

25% 50% 75% MAXMIN

25%

50%

75%

MAX

MIN

0...3

EA0560R1

16 mA

18 mA

20 mA

14 mA

12 mA

10 mA

8 mA

6 mA

4 mA

Figure 16. Split Ranging.

Features of

SQM5x.xxxxxGx,

SQM5x.xxxxxHx,

SQM5x.xxxxxKx

Actuators

SQM5x.xxxxxGx actuators contain the AGA56.41A… circuit board with terminals Y- and

Y+ for 4-20 mA modulating input.

SQM5x.xxxxxHx actuators contain the AGA56.42A… circuit board with terminals Y, M

and U for 0-135 Ω modulating input.

SQM5x.xxxxxKx actuators contain the AGA56.43A… circuit board with terminals Y and

M for 0-10 Vdc modulating input.

Input Signals

The AGA56.4xA… circuit boards accept the following additional input signal:

Line voltage

• Power to A drives the actuator open to the setting of switch cam I (Maximum).

• Power to Z drives the actuator closed to the setting of switch cam II (Economy).

• Power to ZL drives the actuator closed to the setting of switch cam III

(Minimum).

Output Signals

The AGA56.4xA… circuit boards do not provide output signals. Install a double

potentiometer ASZ22…to obtain a 0-1000 Ω actuator position output signal.

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Siemens SQM5 Instructions d'exploitation Page 15

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