Configuration – Banner Safe Speed Monitoring Modules User Manual

Page 7

• An overvoltage protective device
• A transformer with isolated windings
• A distribution system with a multiplicity of branch circuits (capable of diverting energy of surges)
• A capacitance capable of absorbing energy of surges
• A resistance or similar damping device capable of dissipating the energy of surges

When switching inductive ac loads, it is good practice to install appropriately-sized arc suppressors to protect the Safety Module outputs.
However, if arc suppressors are used, they must be installed across the load being switched (e. g., across the coils of external safety
relays), and never across the Safety Module's output contacts (see WARNING, "Wiring of Arc Suppressors").

Auxiliary Monitor Contact
The action of the auxiliary monitor contact, terminals 31-32, inversely "follows" the action of the safety outputs. The 31-32 auxiliary moni-
tor contact is to be used only for control functions that are NOT safety-related. A typical use is to communicate the status of the Safety
Module output to a programmable logic controller (PLC).

Configuration

Front
plate

Figure 5. Removing the front cover

Figure 6. Module adjustments

1. DIP switch bank A

2. DIP switch bank B

3. Simultaneity adjustment po-
tentiometer

4. Fine-tune potentiometer

Use DIP switch banks A and B together to set the ranges. For example, to select the first range setting, set DIP switch 1 in bank A and in
bank B to OFF, set DIP switch 2 in bank A and bank B to OFF.

Range Settings

DIP Switch Banks A and B

Model SSM-…10

Model SSM-…20

5–40 ipm

10–80 ipm

OFF

1,200–10,500

2,400–20,000

OFF

300–2,700

600–5,300

OFF

35–340 ipm

80–650 ipm

Adjusting the Switch Point Value

The Module's four impulse-per-minute (ipm) ranges are selected via redundant pairs of DIP switches, as shown in the table. To access
the DIP switches, insert a small flat-blade screwdriver in the slot behind the Module's front panel, and pry the front panel off.
To adjust the switch point to any value, first select the range via the DIP switches. Then select the value within that range via the fine-
tuning potentiometer, using either of two methods.

Approximate Method
The mechanical range of the potentiometer is 270°. Because the potentiometer is linear, set the approximate values as in the following
example:

• Desired switching point: 1,400 ipm

SSM-FM-11A... Safe Speed Monitoring Modules

P/N 140782_web
rev. C