12 additional options, 1 relay output board khl8924 – Rice Lake IQ 700 Configurable Weight Indicator User Manual
Page 44
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IQ 700 Installation Manual
4.12 Additional Options
Additional options are available with the IQ 700. 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 41 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