Wiring Subbase - Honeywell 7800 Series Installation Instructions Manual

RM7898A 7800 SERIES VALVE PROVING PRIMARY RELAY MODULES
Subbase Compatibility
Any Relay Module in the 1000 Series with a Software
Revision level number starting with a "5" or greater will be
compatible with all subbase models both installed and
newly purchased. This includes (Q7800A1005/U,
Q7800B1003/U), and the 2000 Series subbases
(Q7800A2005/U, Q7800B2003/U).
See Fig. 1 for Software Revision Level number location on
the label (located on the rear of the relay module).
Any relay module in the new 2000 series will only be able
to be installed on subbase Q7800A2005/U,
Q7800B2003/U and will not be backward compatible with
any Q7800A1003/U and Q7800A1005/U subbases
already installed in the field.
Fig. 2. Software revision location.
IMPORTANT
Make sure to check the relay model number and
the software revision level on the relay.
• If you attempt to place a 2000 series relay on a
non-compatible 1000 series subbase, you will
receive an error code of 101. This indicates that
you must a) change out the subbase to a
Q7800A2003/U or Q7800A2005/U or b) choose a
compatible 1000 series relay module.
32-00209-03

Wiring Subbase

WARNING
Electrical Shock Hazard.
Can cause severe injury, death or equipment
damage.
Disconnect the power supply before beginning
installation. More than one disconnect may be
required.
The internal block diagram of the RM7898 is shown in Fig.
1.
1. For proper subbase wiring and sequence chart, refer
to Fig. 4 and 5.
2. For remote wiring of the Keyboard Display Module,
refer to the Specifications for the Keyboard Display
Module (65-0288), specification for the 2-line VFD
KDM (65-0090), the 4-line LCD KDM (32-00110),
Network Interface Unit (63-2278), Data ControlBus™
Module (65-0091) or Extension Cable Assembly (65-
0131).
3. Disconnect the power supply from the main discon-
nect before beginning installation to prevent electri-
cal shock and equipment damage. More than one
disconnect can be required.
4. All wiring must comply with all applicable electrical
codes, ordinances and regulations. Wiring, where
required, must comply with NEC, Class 1 (Line Volt-
age) wiring.
5. For recommended wire size and type, see Table 1.
6. For recommended grounding practices, see Table 2.
4