User Manual

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Siemens Building Technologies SED2 Advanced Operator Panel AOP CM1B5192en
HVAC Products AOP Applications 19.01.2004
4 AOP Applications
Notes:
If the AOP is the command source for the SED2, set USS Telegram Off Time for Serial Interface
BOP Link P2014[1]=5000 (5 seconds). To do this, first set P0003=3. The P2014[1]=5000 setting
causes the drive to trip if communications with the AOP control source is lost.
If you have problems connecting to the SED2 drives, set the internal AOP Parameter “Enable
Autobaud” to Off and the “Default baud rate” to the same as the SED2 (9,600). See 5.5 Editing
Internal AOP Parameter Set.
4.1 Single Drive Control Using the AOP
Per default, the AOP is configured to work with only one SED2 in LOCAL mode. In LOCAL mode, the AOP
normally mounts directly onto the SED2. The RS-232 and RS-485 ports handle communications. Full operator
control of the SED2 is available with access to all normal drive and AOP internal parameters.
To configure a single SED2 VSD with the AOP as the control source, follow the procedure in the Quick
Commissioning section of this manual.
4.2 Network Setup (RS-485 with Panel Mounting Kit)
The AOP has the capability to control up to 31 SED2 VSDs connected as a network. In a network configura-
tion, a unique two-digit number identifies each VSD. When the AOP connects to a network of SED2 VSDs,
there are two MASTER Modes of operation:
• The AOP can access a single SED2 VSD on the network with full control/parameter access
• The AOP can use the Broadcast mode to simultaneously start/stop all drives on the network.
Use the following procedure to set up a network of SED2 VSDs under control of an AOP:
1. Use the BOP/AOP panel mounting set (PMS) for multiple VSD control (ASN: SED2-DOOR-KIT2) to con-
nect RS-485 communications as follows:
a. Correct wiring for PMS and SED2 VSD is as follows:
PMS terminal 3 → SED2 terminal 9 = DC +24V
PMS terminal 4 → SED2 terminal 28 = DC 0V
PMS terminal 1 → SED2 terminal 29 = RS-485 communication
PMS terminal 2 → SED2 terminal 30 = RS-485 communication
b. Connect additional SED2 VSDs to RS-485 as follows:
SED2 Drive 1 terminal 29 → SED2 Drive 2 terminal 29
SED2 Drive 1 terminal 30 → SED2 Drive 2 terminal 30 etc.
c. Use twisted pair cable or shielded cable (preferred).
d. The end-of-line SED2 VSD must have a 120-ohm terminating resistor across RS-485 Pins 1 and 2.
e. Use a common ground for all SED2 VSDs and the PMS.
f. For correct communication DIP Switch 1 on the PMS board must be ON.
2. Configure the SED2 VSDs for network use.
a. Set the Command Source P0700[0]=5 (USS on Com link). This sets the control over the USS link on
the communications port.
Note: The BOP need not be removed. If, in that case, P0700[1] is set to 1, the drives can be con-
trolled via the AOP or the network when in automatic mode (that is, by the AOP timer also).
Manual operation on site is also possible, via the BOP or AOP, when P0700[1] is set to 4.