Rs-485 Shielding And Grounding; Commissioning - Siemens sed2 Commissioning Manual

5.5 RS-485 shielding and grounding

Building Management System
(BMS)
R S4 8 5
0 V +ve
-v e
Note: If a 0 V signal is available on the BMS, ideally this should be connected to the 0 V terminal 2 of the SED2.
6

Commissioning

Warnings
Only authorized personnel trained in the setup, installation, commissioning and operation of the product may work
on the product and plant.
Danger ♦ SED2 operate at high voltages
♦ Operation of electrical equipment inevitably involves the use of dangerous voltages in
♦ Emergency stop facilities in accordance with EN 60 204 IEC 204 (VDE 0113) must
♦ In cases where faults in the control equipment could cause significant equipment dam-
♦ Certain parameter settings may cause the VSD to restart automatically after a power
For reliable motor overload protection, the motor parameters must be accurately config-
Caution
ured.
The equipment incorporates internal motor overload protection in accordance with UL508C,
section 42. Refer to P0610; I
provided via an external PTC temperature sensor (disabled by default, P0601).
The equipment is suitable for use in a circuit delivering max. 10,000 symmetrical amps
(rms), and is designed for a maximum voltage of AC 230 V / 460 V / 575 V when protected
by a type H or K fuse.
Do not use the variable speed drive as an "emergency stop facility"
(see EN 60 204, 9.2.5.4).
Siemens Building Technologies
HVAC Products
E a rth C o m p e n s a tin g C a b le
SED2
P(1)
Hz
I Hand Fn
0 Auto P
SED2
2 29 30
Shielding
R S4 8 5
Recommended data cable: 2 x 2 x 0.75 mm
some components
remain operative in all operating modes of the control equipment. Resetting the emer-
gency stop facility must not result in an uncontrolled or undefined restart
age or severe physical injury (e.g. potentially dangerous short circuits), take additional
external precautions or provide facilities to ensure or enforce safe operation even in the
event of a short-circuit (e.g. independent end switches, mechanical interlocks, etc.)
failure
Commissioning Guide
6 Commissioning
SED2
P(1)
Hz
I Hand Fn
0 Auto P
SED2
29
2 30
Shielding
RS 48 5
(e.g. Li -YCYP-2 x 2 x 0.75 mm2 or LIY(C)Y-0B 2 x 2 x 0.75 mm
2
2
t is the default for ON. Motor overload protection can also be
Termination on the
last drive in the network
1 30
2 29
R2=470Ohm
R1=1KOhm
Shielding
R S4 8 5
)
2
SED2
P(1)
Hz
I Hand Fn
0 Auto P
SED2
1 2 29 30
23/80
CM1G5192en
26.02.2003