CHAPTER 5: PROGRAMMING MODES
MODEL HF2 2 kHz HIGH FREQUENCY RESISTANCE WELDING POWER SUPPLY
5-6
990-057
4
Press [CHNG] To operate the HF2 Weld Control in the Weld Graph State.
Output Relays
The HF2 Weld Control has two solid state relays which can be used to provide status or timing signals
to a user Programmable Logic Control (PLC). For a full description on how to connect Relay K1 and
Relay K2, refer to
Chapter 4, Control Signals, Output Relays.
1
Relay K1 and Relay K2 can only be programmed in the Alphanumeric PROGRAM State.
2
Use the vertical cursor keys [
VW
] to select the weld schedule that you want to modify. From
the Weld Graph RUN State or Basic Weld Monitor RUN State, press [PROG] multiple times to
enter the Alphanumeric PROGRAM State. If you are already in the Alphanumeric PROGRAM
State, press [PROG] once.
3
Press [
W
] until the RELAY 1 and
RELAY 2 legends are displayed. Both
relays can be activated in the
SQUEEZE, WELD, and HOLD
periods. Press [CHNG] to select ON.
In this example, RELAY 1 will turn on
during the WELD period.
4
There are four more RELAY 1 options
listed under the SQZ period column.
Press [CHNG] to select the RUN
STATE option. In this example, notice
that the RELAY 1 options for the
WELD and HOLD periods disappear.
Selecting the RUN STATE option will
cause RELAY 1 to always be on when
the HF2 is not making a weld.
5
Press [CHNG] until the ALARM (NO)
option appears. An ALARM condition
causes RELAY 1 to switch from the
normally open (NO) state to the closed
state. RELAY 1 automatically opens
when the alarm condition is cleared by
pressing [RUN] or when the next
welding sequence begins.
6
Press [CHNG] until the ALARM (NC)
option appears. An alarm condition
causes RELAY 1 to switch. An alarm
condition causes RELAY 1 to switch from the normally closed state (NC) to the normally open
state. RELAY 1 automatically closes when the alarm condition is cleared by pressing [RUN] or
when the next welding sequence begins.
