12 additional options, 1 relay output board khl8924 – Rice Lake Condec UMC600 User Manual
Page 44

Options Configuration
41
4.12 Additional Options
Additional options are available with the UMC600. While they are not digitally accessed and set up under the
option mode (front panel switches 2 and 3 closed), they are available. Additional options include the following:
•
Relay board (KHL8924) installed or when ordered as a kit (KBT7116-11/12).
•
Relay board (KJN8924) installed or when ordered as a kit (KBT7116-16).
•
Parallel BCD Option kit (KBY7116-1).
4.12.1
Relay Output Board KHL8924
This unit can be ordered with the relay output board(KHL8924) installed. Refer to Figure 4-13 on page 42 for
detailed board wiring. This option provides four solid state relays to control 115/230 VAC lines directly.
For applications requiring dry contacts, reed relays can be ordered. Ordered in kit form, order:
•
Solid state relays installed order KBT7116-11
•
Reed relays installed order KBT7116-12
A rear access hole in the indicator is required for accessing output from the relay board. Newer indicators now come
standard equipped with this hole.
Additional features of KHL8924 include:
•
Power-up reset protection – all relays are held off until the CPU re-establishes proper operating conditions
caused by power interruptions.
•
Watchdog circuitry – A hardware timer is provides to automatically turn off all relays if the instrument is
not running.
•
Solid state optically isolated relays – Rated 20VAC to 120VAC, 5mA to 1 Amp.
•
Dry contact reed relays DC only – Rated 0.5 Amp, 10VA contact rating max. and 100VDC switching volts
max.
•
All outputs provided with terminal strip connections.
The following table shows the relay output wiring and is shown generically for either solid state or dry contact
output relay options.
Table 4-21. KHL8924 Relay Output Wiring
Output Mode
TB1
Output
A
B
C
D
E
F
G
1
1
Setpoint 1
Setpoint 1
with preact
Setpoint 1
Setpoint 1
with preact
Setpoint 1
with preact
Low
Low
2
3
2
Setpoint 1
(dribble)
Setpoint 1
(dribble)
Setpoint 1
(dribble)
Accept
Accept
4
5
3
Setpoint 2
Setpoint 2
with preact
Setpoint 2
Setpoint 2
with preact
Tolerance
High
High
6
7
4
Zero band
Zero band
Setpoint 2
(dribble)
Setpoint 2
(dribble)
Zero band
Zero band
Zero band
8
9
Spare
10