Unitek Peco WELD SENTRY 2, Руководство пользователя

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WELD SENTRY 2 Page 5
SECTION 2 - INSTALLATION
The basic connections required to monitor are the Current and Voltage inputs. The optional connections are
the Start Signal, Line Monitor, Control Signals, Relay Output and the
RS-232/RS-422/RS-485. Refer to the
corresponding sections in Specifications for more detailed information and technical specifications.
CURRENT AND VOLTAGE INPUTS
Input cables to pick up Weld Current and Weld Voltage must be connected at the rear panel of the Sentry.
To measure Weld Current the Sentry uses either a Current Coil or a user supplied Current Shunt. Select the
type of Current Input to be used by depressing the Coil/Shunt Switch on the rear panel and by selecting the
Shunt Size from the System Setup Menu. Weld Voltage is measured by attaching the clips on the Voltage
pickup cable to the welding electrodes.
CURRENT COIL INSTALLATION
1. Plug the Current Coil Connector into the two-pin
matching receptacle on the Sentry rear panel.
2. a. 1x Current Coil: Snap open the coil and slip the
open coil over one welding cable or one electrode
holder as shown in Figure 3.
b. 10x Current Coil: Disconnect the end of one
welding cable and feed it through the Coil. Be sure
to bolt the cable back in place securely.
3. Use tie-wraps or tape to prevent movement of both
the coil and cable.
4. Document the position of the coil in case it is
removed and re-attached. Movement of the coil can
cause the current measurement to vary by as much
as ±5%.
Figure 3 – 1X Current Coil Installation.
5. Program the Sentry for the appropriate type of Current Coil; select Menu/System Menu/System Setup.
6. Select the "OUT" position for the Coil/Shunt Switch on the rear panel.