Sartorius YDO01C-232 A1 Notice D'installation page 5

Configuration of the solder bridges
1
1
3
Configuration of the solder bridges
(factory setting)
1
3 4
Operation as an RS-422 Interface (Option A2):
§ Solder bridge 1, for the RS-485/RS-422 setting, must be closed (factory setting: solder
2a
bridge open, for operation as an RS-485 interface).
2b
§ Deactivate both RS-422 bias resistors (if active). To do this, open the solder bridges
(factory setting: both bias resistors are activated, i.e., the solder bridges are closed).
2c
The bias resistors must occur no more than once per data transmission path (whether
over a network or in a point-to-point connection); otherwise, transmission errors may
occur. Please refer to the specifications or wiring diagram for the remote station or
3a
network node in question for detailed information. Always activate or deactivate bias
3b
resistors in pairs.
§ Deactivate the terminating resistor (120 O) for operation in RS-422 mode (2c),
3c
if active. To do this, open the solder bridge (factory setting: terminating resistor
activated; i.e., solder bridge is closed).
The terminating resistor must be activated if the device is at either end of an RS-422
bus system, or when connected point-to-point with another device. The remote
station must also have a 120 O terminating resistor. If the device is not at either end
of an RS-422 bus system, deactivate the terminating resistor by opening the solder
bridge.
§ Deactivate both bias resistors and the terminating resistor required for configuration
as an RS-485 interface. To do this, open solder bridges 3a, 3b and 3c (factory setting:
both bias resistors and the terminating resistor are activated; i.e., all three solder
bridges are closed).
§ The YDO01C-485 module configured as an RS-485 interface is installed directly on
the digital PCB in the Combics indicator (models CISL., CIS., CW.P, CW.S). For details,
please see "Installation in the Indicator."
YDA01C-20MA (Option A4)
The YDA01C-20MA interface module is an analog output port. This module can be
operated as either a current interface (0/4 to 20 mA) or a voltage interface (0 to 5 V).
Voltage can be supplied internally or externally (electrically isolated
module for the intended use involves opening and closing certain solder bridges.
The positions of the relevant solder bridges are shown in the drawing on the left.
The interface module can be configured for any of the following 3 operating states:
– Voltage interface, 0 to 5 V
– Current interface, 0 to 20 mA
– Current interface, 4 to 20 mA
2
The operating state is defined by the configuration of solder bridges 1 and 2. Solder
bridge 1 has 3 settings: "0 to 5 V," "0 to 20 mA" and "4 to 20 mA." Solder bridge 2
defines whether the module is used as a voltage interface or a current interface.
!
Make sure that the settings for solder bridges 1 and 2 are compatible; for example,
if solder bridge 1 is configured for one of the current interface settings, solder bridge 2
must be set to "current interface." Conversely, if solder bridge 1 is set to "0 to 5 V,"
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solder bridge 2 must be set to "voltage interface."
The voltage supply setting ("internal" or "external"; factory setting: internal) is defined
by solder bridges 3 and 4 (see the illustration on the left).
! Make sure the settings for solder bridges 3 and 4 are compatible; i.e., either both for
internal or both for external voltage supply.
2
1) The shielding in the connecting cable is connected at one end to the housing of the indicator.
The indicator is connected to the protective grounding conductor.
1)
). Configuring the
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