ETEL Doc.- Hardware Manual # DSCDL 904 / Ver D / 20/12/05
DSCDL Hardware Manual
Direct Drives & Systems 7
1.2 DSCDL presentation
1.2.1 Working principle
The DSCDL is a digital position controller. It has been designed for direct drive applications. It includes on a
single board, the control circuits, the power stage and all the necessary interfaces for the communication, the
encoders and the inputs/outputs for two motors.
1.2.2 Applications
The DSCDL can drive two single or/and two-phase motors. The DSCDL can drive brushless and DC motors.
They must also be implemented with analog (incremental or absolute (EnDat 2.1)) or TTL encoders available
on the market. It is also possible to drive stepper motors in open loop (no need of encoder in this case) with
firmware from version 1.06A.
1.2.3 General operating conditions
The DSCDL is designed to operate in a non-aggressive and clean environment, with a humidity rate ranging
between 10% and 85%, an altitude < 2000m (6562 ft), and a temperature ranging between + 15°C (59°F) and
+ 30°C (86°F). The DSCDL must be connected to an electrical network of overvoltage category 2 (refer to EN
50178 and UL 804 standards for more information). The electronics must be in an enclosure respecting a
pollution degree of 2 (refer to UL 508C and EN 50178 standards for more information). The DSCDL is not
designed or intended for use in the on-line control of air traffic, aircraft navigation and communications as well
as critical components in life support systems or in the design, construction, operation and maintenance of any
nuclear facility.
1.2.4 Transport and storage conditions
During the transport and the storage, the controller must remain inside its original packaging. The transport
conditions must respect the class 2K3 of the IEC 60721-3-2 standard (temperature between -25°C and +70°C,
and humidity < 95% without condensation) and the storage conditions must respect the class 1K2 of the IEC
60721-3-1 standard (temperature between +5°C and +45°C, and humidity between 5 and 85% without
condensation).
1.2.5 Interfaces possibilities
Motor and its position encoder
To control the position (in closed loop) of a rotary and/or linear motor, the DSCDL needs a signal coming from
an analog (incremental or absolute (EnDat 2.1)) or a TTL encoder linked to this or these motor(s). It is also
possible to drive stepper motors in open loop (no need of encoder in this case).
Communication
The user can set the DSCDL with a PC (Win 9x/2000/NT/XP) using the ETEL Tools (ETT) software through
the ETEL-Bus-Lite2 (RS232 / RS422) communication port. Refer to the 'EBL2 Communication Manual' for
more information.
The DSCDL also includes ETEL's Turbo-ETEL-Bus (TEB) which is a high speed field bus based on an Ethernet
100 Mbps chip. It includes all features to interpolate complex movements with several synchronized DSCDLs,
if ETEL's DSMAX motion controller is installed in a PC and linked to the TEB. If ETEL Tools is installed on the
same PC than the DSMAX (or DSTEB) board, all the DSCDLs can be set through the TEB. The user can 'daisy
chain' up to 31 nodes on the TEB (15 DSCDLs (30 axes) and one DSMAX (or DSTEB) board).
Caution: The TEB is not compatible with Ethernet boards available on the market. Therefore, do not
connect the TEB on the Ethernet port of your PC.
Inputs / outputs
The customer's inputs / outputs are digital signals coming from a CNC machine-tool, a PLC or a joystick for
example (refer to the connection diagram next page).
The electrical interface details are given in §3.
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