Specifications; Electrical Specifications; Mechanical Specifications; Elimination Of Heat - HELIX DM422 User Manual

2. Specifications

Electrical Specifications (T = 25℃/77℉)
j
Parameters
Min
Output current 0.3
Supply voltage +20
Logic signal current 7
Pulse input frequency 0
Isolation resistance 500

Mechanical Specifications (

unit: mm [inch]
Figure 1: Mechanical specifications

Elimination of Heat

Driver's reliable working temperature should be <70℃(158℉), and motor working temperature
l
should be <80℃(176℉);
It is recommended to use automatic idle-current mode, namely current automatically reduce to
l
60% when motor stops, so as to reduce driver heating and motor heating;
It is recommended to mount the driver vertically to maximize heat sink area. Use forced cooling
l
method to cool the system if necessary.
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DM422 Digital Stepping Drive Manual V1.0
DM422
Typical Max
- 2.2 (1.6 RMS)
- +40
10 16
- 75
)
2
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Operating Environment and other Specifications

Cooling
Unit
Operating Environment
A
VDC
mA
Storage Temperature
kHz
Weight
MΩ

3. Pin Assignment and Description

The DM422 has two connectors, connector P1 for control signals connections, and connector P2 for
power and motor connections. The following tables are brief descriptions of the two connectors.
More detailed descriptions of the pins and related issues are presented in section 4, 5, 9.

Connector P1 Configurations

Pin Function
PUL
DIR
OPTO
ENA
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DM422 Digital Stepping Drive Manual V1.0
Natural Cooling or Forced cooling
Avoid dust, oil fog and corrosive gases
Environment
Ambient Temperature
Humidity
Operating Temperature
Vibration
-20℃－65℃ (-4℉－149℉)
Approx. 100g (3.5274oz)
Details
Pulse signal: In single pulse (pulse/direction) mode, this input represents pulse
signal, each rising or falling edge active (software configurable); 4-5V when
PUL-HIGH, 0-0.5V when PUL-LOW. In double pulse mode (pulse/pulse) ,
this input represents clockwise (CW) pulse，active both at high level and low
level (software configurable). For reliable response, pulse width should be
longer than 7.5μs. Series connect resistors for current-limiting when +12V or
+24V used. The same as DIR and ENA signals.
DIR signal: In single-pulse mode, this signal has low/high voltage levels,
representing two directions of motor rotation; in double-pulse mode (software
configurable), this signal is counter-clock (CCW) pulse，active both at high
level and low level (software configurable). For reliable motion response, DIR
signal should be ahead of PUL signal by 5μs at least. 4-5V when DIR-HIGH,
0-0.5V when DIR-LOW. Please note that rotation direction is also related to
motor-driver wiring match. Exchanging the connection of two wires for a coil
to the driver will reverse motion direction.
Opto-coupler power supply, and the typical voltage is +5V. Series connect
resistors (at the PUL, DIR, ENA terminals) for current-limiting when +12V or
+24V used.
Enable signal: This signal is used for enabling/disabling driver. High level for
enabling the driver and low level for disabling the driver. Usually left
UNCONNECTED (ENABLED).
3
0℃－50℃ (32℉－122℉)
40%RH－90%RH
70℃ (158℉) Max
2
5.9m/s Max
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