Changing Xfer (Start Machine Motion) From Dry Contact Closure To Voltage Signal - Hypertherm POWERMAX1250 Operator's Manual

SETUP
Changing XFER (start machine motion) from dry contact closure to
voltage signal
24 VDC (chassis ground reference) at 100ma max is available at J19 on the power board to
drive an isolated/floating device such as a 24 VDC relay coil (240 ohms or greater) or a typical
industrial input isolation module (which has an opto-coupler built-in). Shown below are typical
connections for a high side drive arrangement.
J16 J15
J19
Move black (BLK) wire to
ground (GND) and add
jumper wire as shown.
3-14
1
Driving a Relay Coil
XFER START
5
V-div -
6
V-div +
4
Start
3
Signal
14
12
13
Shield
Notes:
• Customer-supplied
24 VDC relay coil
> 240 ohms.
• Must use suppression diode
(1A, 100V) such as IN4002
through IN4004 type across
coil.
• Pins 5 and 6 are used only
on systems that include the
PowermaxEdge cable with
voltage divider.
powermax
1250
Operator Manual