WCL488 Series Water Cooled Electronic Loads
Operation & Programming Manual
TDI-Dynaload Division
Page 44
402828, Rev. B1
WCS Chassis Ground Connection
Referring to Figure 23 above, as with the WBL488, the chassis ground connection is used to
ground the third wire of the unit’ s water shutoff relay.
Slave Bit Identifier Switches
When configuring a master/slave system, each slave unit must have its bit identifier set in order to
communicate correctly with the master. As shown in Figure 24, on the rear panel of each slave
unit there is a set of DIP switches that must be set to a proper number. These are referred to as the
Slave Bit Identifier Switches. The switch on each slave unit must be set to a slave ID number.
Starting at 1 set each sequential slave to the next number. To enable the bit, the selected switch
position must be placed the “ OFF” position.
IMPORTANT:
You must be sure that no two slaves are set to the same number. Having two
slaves set to the same number will confuse the master. The master will not
identify the second slave unit and system errors will occur.
Figure 24.WCS Slave Bit Identifier Switches
The master unit will detect all slaves present and self configure to reflect the full system rating.
The master will report all system conditions, that is: current and power levels and all alarms
including slave alarm status.
Not all slaves need to be used in order to operate. If a slave is turned off, the master detects this
and configures based on the number of slaves. Pressing the “ slave” button on the master will
display the number of slave units present in the system.
25
0V
HIGH
CURRENT
T IGHT EN
SECURELY
AC
SELECT
F3
.1
5A
OFF/ ON
UV
FLUID
OUT LET
RELAY
FLUID
INLET
GND
A
3
SLAVE
ADDR
O
N
A
0
A
2
A
1
A
9
A
8
A
7
A
6
A
4
A
5
SLAVE
COMMUNICATION
402828-02-18.C D R
Slave Bit Identifier Sw itches
A
3
SLAVE
ADDR
O
N
A
0
A
2
A
1
A
9
A
8
A
7
A
6
A
4
A
5
